Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e4069dee0b8055…

MALICIOUS

PDF

14.5 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: dfe9fd9c9a89bc723353603b0e32e2ed SHA-1: 9a8eb87ade0c008a8363256c8a761fb15e61d2e3 SHA-256: 30e4069dee0b8055c82973c205fff969f3c1b245051b79398dff84d6487a92c7
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The file is identified as a malicious PDF by multiple engines, including ClamAV which detected it as Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The ML classifier also strongly flagged this PDF as malicious. The embedded JavaScript file, 'javascript_obj0007_000.js', is the primary indicator of malicious activity, likely serving as a downloader or dropper for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36166
  • JavaScript action low 1 related finding 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
7dc5c922dfce0843670642490906abb564bcd858c73dd59d7d98d328e71baa86		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 75159 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

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