Malicious PDF — malware analysis report

Static analysis result for SHA-256 964562833a61b3d2…

MALICIOUS

PDF

31.7 KB
MD5: 82bd8407eb58c586ea60c737fcf208d8 SHA-1: 82970fc2eb4d57d09bd3df40ebf4fbfb267dd921 SHA-256: 964562833a61b3d29f7833696d2cf41eac642a02c9771f0d6dbc3a4d288d160c
70 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The sample is a PDF file identified as malicious by ClamAV with the signature Js.Exploit.HTML-30. It contains an XFA form, which is a known vector for exploiting PDF vulnerabilities. The embedded JavaScript, although partially obfuscated, likely aims to download and execute a second-stage payload. The presence of an embedded URL further supports this delivery mechanism.

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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