Malicious PDF — malware analysis report

Static analysis result for SHA-256 4da0fcde3fd3d11c…

MALICIOUS

PDF

7.3 KB
MD5: 67c9c458bfa1aa23d3defa7141bc1564 SHA-1: 4c6ceb115c04922727bfde80ac890e5d84c3de8f SHA-256: 4da0fcde3fd3d11cd3182658487c12690451fbafc4599a625401be31da3af81c
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript that is obfuscated using unescape() and exploits CVE-2009-4324 via the media.newPlayer object. This indicates an attempt to execute arbitrary code. The JavaScript stream is likely responsible for downloading and executing a second-stage payload.

Heuristics 6

  • 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. (matched in decompressed stream)
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • 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. (matched inside decoded stream)
  • 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. (matched inside decoded stream)
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000032b.bin
52fd65898ed5dc905beaddfd2cc2ca18ddadc0ddfbe9fac5c9dcf4ab9ff78840		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B 2210 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
stream_003_off000006f5.js
1dc7ed66b4bd00e4fcbb1dec80cd16cff4f57648b8f5c4b63dfc4285fa6b0c31		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6F5 444 bytes
objstm_0025_00.bin
d39bd97160878a4891d326632c4f9ff3802297304c0e02f8ecfaf1b58006e8ab		 pdf-objstm-decoded PDF /ObjStm 25 0 obj (inflated) 375 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.