Malicious PDF — malware analysis report

Static analysis result for SHA-256 82865fa5f9240ae6…

MALICIOUS

PDF

28.0 KB
MD5: ee4311979bce3168d444c6da3a2adc9a SHA-1: 76a0d296ba738f23aa859990908089862087914a SHA-256: 82865fa5f9240ae6f8f76aa5c19035ae846d92e907ecaa53107638d9be6cbf91
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF file contains an XFA form, which is a known vector for exploiting vulnerabilities. ClamAV detected this as Js.Exploit.HTML-30, indicating JavaScript-based exploitation. The embedded URL, while appearing to be a schema reference, is associated with the XFA structure and could be part of the exploit chain. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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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