Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c402854273d9d6…

MALICIOUS

PDF

22.2 KB
MD5: f19606dd547dfac2489907b84b521bff SHA-1: fa7dbf71dabe72d8049ea5706b3a6104d11c2b79 SHA-256: 15c402854273d9d6c38d61d5239edcfa50aeaad2f070b8a97c77beddabb23f94
150 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript that exploits CVE-2009-0927 using the `Collab.getIcon` method. This script is designed to download a second-stage payload from the URL http://mylovebusiness.com/new/post.php?e=7&&. The deobfuscated JavaScript confirms the shellcode download functionality, indicating a downloader or dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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)
  • PDF JavaScript shellcode contains an embedded download URL high PDF_JS_SHELLCODE_DOWNLOAD_URL
    Decoded PDF JavaScript shellcode contains a hardcoded http(s) URL stored as little-endian %uXXXX Unicode escapes. 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).
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mylovebusiness.com/new/post.php?e=7&&

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0008_000.js
876fbcddae234aad4abcb678613a910569474c8d17f3a211e7d8959537692a2b		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 1177 bytes
legacy_pdfkit_stage_000.js
9cf85abbc24fd8d0e0297cb2bff8e17be822e3653d6ada50953c67a25f17d733		 deobfuscated-js repeated-marker hex decoded JavaScript at offset 0x6B4 1385 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).

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