Malicious PDF — malware analysis report

Static analysis result for SHA-256 62730b674a9e7f69…

MALICIOUS

PDF

28.1 KB
MD5: c33d431027af8de5c080747e58e0c8a0 SHA-1: 76afccb90024a8b18aae9fd86ea085a24750fa4a SHA-256: 62730b674a9e7f6918e15684ed8bc9e88f8a51f9701f7c9a441dd59ce3181926
100 Risk Score

Malware Insights

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

The sample is a PDF file flagged as malicious by ML classifiers and ClamAV with the signature Js.Exploit.HTML-30. It contains XFA form elements and embedded JavaScript, which is likely used to exploit a vulnerability in PDF readers. The embedded URL is likely part of the exploit chain or a download location for a secondary payload.

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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