Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef2c27ac91671da…

MALICIOUS

PDF

145.8 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)
MD5: 30759ca97a757994f01cf22cdee22222 SHA-1: 566b99be9a0bc88a493a138ea3b594c4102f2324 SHA-256: 0ef2c27ac91671daae76ab3de9cb219f804766d78e2520b250857138fd802a63
206 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript that utilizes an eval() call, a common technique for obfuscating malicious code. The heuristics indicate a PDF JavaScript exploit cluster, and ClamAV identifies it as Pdf.Exploit.Agent-35931. The script likely downloads and executes a second-stage payload, although the exact URL is obfuscated within the document body.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • ClamAV: Pdf.Exploit.Agent-35931 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35931
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • 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.