Malicious PDF — malware analysis report

Static analysis result for SHA-256 18929988de1ac806…

MALICIOUS

PDF

8.2 KB
MD5: 7974b1dcaef3cf645e1f228bf5e103de SHA-1: e1a1cac29a78e20647d2c6e3018e3888ea0c1a74 SHA-256: 18929988de1ac80614cd73ecfd377849cb30a977f34760f5bff92e383105142e
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript is likely used to download and execute a second-stage payload, a common technique for malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

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