Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad785f2886cd1f03…

MALICIOUS

PDF

28.5 KB
MD5: 77771bdb12b12d448f99e038bef1c58f SHA-1: abe7d9bbae7fdbc33e894135c51f9278408d5483 SHA-256: ad785f2886cd1f03ed54632356d6414ee6b8ca001ecf04ad450f50e45f2c0323
70 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The file is a PDF containing XFA form elements and embedded JavaScript, identified by ClamAV as Js.Exploit.HTML-30. The embedded JavaScript appears to be obfuscated but is likely responsible for exploiting a vulnerability within the PDF viewer to execute malicious code. The presence of an embedded URL further suggests a potential download or redirection 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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