Malicious PDF — malware analysis report

Static analysis result for SHA-256 b276305db9274108…

MALICIOUS

PDF

1.4 KB
MD5: 947d09ecf81a4a626a4252dd5e20ee9d SHA-1: 51e6ad1f2a8eb747a252a6e42c3bfd0e3d393d69 SHA-256: b276305db9274108e57ae1c06b3a73e03706b7eb94aada1aa175cb6813674712
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

This PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic suggests exploitation of a specific vulnerability related to media playback. The presence of unescaped JavaScript and the ClamAV detection as 'Pdf.Dropper.Agent-7294409-0' strongly indicate that the script is designed to download and execute a malicious payload. The file's purpose is to exploit this vulnerability to compromise the user's system.

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: Pdf.Dropper.Agent-7294409-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7294409-0
  • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111711_000.js
ed214d008ca7f8fad0affc792159f2b30ce479dc90c5348e0751937c74ebe0c2		 pdf-javascript-stream PDF /JS object 111711 at offset 0x197 291 bytes
javascript_obj111712_001.js
449e9662f702da840a9d83b64fc89c3ca9999a398d63b3b24039766f347260c6		 pdf-javascript-stream PDF /JS object 111712 at offset 0x2B2 978 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
javascript_obj111713_002.js
d2f98bec78aa096efa5aca99b701d5e6b9a8e2cf728fb7e79bf248862bacf14b		 pdf-javascript-stream PDF /JS object 111713 at offset 0x517 70 bytes

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