Malicious PDF — malware analysis report

Static analysis result for SHA-256 0445e802832afbba…

MALICIOUS

PDF

28.0 KB
MD5: ca1da85d9d52bf6e7e9212c3be405bde SHA-1: e5af5457d193c28e9c74fd7177869d8753021b20 SHA-256: 0445e802832afbba25195d7bc42d84a09d743235c09249287a199c759043e684
100 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, specifically detecting Js.Exploit.HTML-30. It utilizes XFA forms, a known vector for PDF exploits, and contains obfuscated JavaScript. This script likely attempts to download and execute a second-stage payload from the embedded URL, aligning with common attack patterns for malicious PDFs.

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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