Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c257b76c63d2846…

MALICIOUS

PDF

3.9 KB Created: 2007-10-16 06:43:14 +03:00 Authoring application: ⁇⁳⁴⁩⁣⁥†⁐⁄⁆⁴⁩⁴†⁖′‮‰′
MD5: 22acfe4751893d3a61ae096441092ae4 SHA-1: a614c8fecaeb6520b7a14c0423aa118388bc0057 SHA-256: 9c257b76c63d28461e5d9f6a29f6152684726ebdc4788cfd040a3ae9832c3a78
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.003 Windows Command Shell

The PDF sample contains a malicious URI that references the Windows command interpreter and attempts to execute calc.exe. This indicates an attempt to exploit a PDF vulnerability to achieve arbitrary command execution. The ML classifier and ClamAV detection strongly support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-1388600 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-1388600
  • PDF URI references command interpreter path high PDF_DANGEROUS_URI_COMMAND
    PDF contains a /URI action whose target uses a mailto/path traversal shape and references a command interpreter or scripting host. This is not a normal web link and matches legacy PDF command execution/dropper lures.
  • External URI low PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/

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