Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc95def2751a7c0a…

MALICIOUS

PDF

28.1 KB
MD5: b86a2eb214b8548543af912b7317897e SHA-1: e5fb75ac152375f6d364adc2922ab56f6bfd9bd7 SHA-256: fc95def2751a7c0a977c481723cf16338d73b53f6d28530e73109737aa7f913c
98 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for Js.Exploit.HTML-30, indicating it contains malicious JavaScript. The presence of XFA forms further suggests an exploit attempt. The embedded JavaScript, although obfuscated, likely attempts to download and execute a second-stage payload, as suggested by the ML classifier's high confidence and the ClamAV detection. The embedded URL is likely part of this exploit chain.

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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