Malicious PDF — malware analysis report

Static analysis result for SHA-256 72fe38e19aafb1c9…

MALICIOUS

PDF

16.3 KB
MD5: c7e58e26903af3afae5ab2b9e000cf1d SHA-1: 0629ead2038a7e5f258c408d4776511585a2442f SHA-256: 72fe38e19aafb1c9becb78d53a75f940d49d285bf6479fa513416f1083bdbea6
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36324' and an ML classifier. It contains embedded JavaScript which is obfuscated but appears to be designed to download and execute a secondary payload. The presence of JavaScript and the exploit detection strongly suggest an attempt to compromise the user's system via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36324 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36324
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js
46d261ab4f9c4242b04d46e07155a2bb5c7cfb8ed14333ffc7911436bccdc1eb		 pdf-javascript-stream PDF /JS object 76 at offset 0x2D4 15730 bytes

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