Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d55c6c411cd7da…

MALICIOUS

PDF

11.3 KB
MD5: d031f92007c2d489ac7eb33b3692c1aa SHA-1: 082f1e79bedcbcb6532eb204a74780bf7cfeeaa7 SHA-256: d8d55c6c411cd7da996ff1db95bd916439f8cb9f7971efc74a2351aebcf3777c
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2009-4324) related to media player handling. The embedded JavaScript, named 'javascript_obj0006_000.js', is obfuscated and likely responsible for executing the malicious payload. The ClamAV detection further confirms the malicious nature of the file.

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)
  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
faf97922d0f456ab99b3c098d873afec65699eb59685950fe787d1c35f3201b8
pdf-javascript-stream PDF /JS object 6 at offset 0xC0 2973 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).