Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aceaf555eaaf886…

MALICIOUS

PDF

32.2 KB
MD5: 056b92caff891cf4acc7089263009d7a SHA-1: b5fc86bbba3820b6e7300d79b9305ee7e1ffdd70 SHA-256: 9aceaf555eaaf886630b181e1a1704fa5c07a1e9ed6a284a6f81ce3281cc2e54
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting JavaScript exploits within an XFA form. The embedded URL, while seemingly benign, is likely part of the exploit chain. The XFA form structure suggests an attempt to execute embedded scripts or exploit vulnerabilities within PDF viewers.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://www.xfa.org/schema/xfa-template/2.5/

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