Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f030094a65ea12a…

MALICIOUS

PDF

1.4 KB
MD5: 37745a82ab54bcaf3e6be81bf2fa6052 SHA-1: 447b95874a799394319d1a64a51182960e27c923 SHA-256: 9f030094a65ea12a5ae90e393bb0a59fc55e032ba90157d6e29ad27bcd3c63f0
118 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE-2009-4324 heuristic suggests the JavaScript is designed to exploit a known vulnerability in Adobe Reader's media player functionality. The unescape() call further points to obfuscated JavaScript, likely used to download and execute a secondary payload. No specific family could be identified, but the exploit vector is clear.

Heuristics 5

  • 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.
  • 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111111_000.js
aa33f1e3fb2fe8c71a41a095eb7de520b5d65f51149d5502e6a8068e0545b197
pdf-javascript-stream PDF /JS object 111111 at offset 0x160 1272 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
javascript_obj111112_001.js
072ca8a55d696f7fecbe617716a5458d29c048588b9671d7d483165222a55504
pdf-javascript-stream PDF /JS object 111112 at offset 0x489 256 bytes