Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f7fa96f0cedc03b…

MALICIOUS

PDF

79.4 KB
MD5: 621c785058a06e11e6814656253d1b20 SHA-1: f197748d36059013b3685d83dbddb214af90dd87 SHA-256: 6f7fa96f0cedc03be77d3b56806c3d25245a73ed8ec01240ddd7ba72f7367717
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains an embedded XFA form with JavaScript, flagged by multiple heuristics as malicious. The embedded script is heavily obfuscated but appears to be designed to download and execute a secondary payload. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023c.bin
ec64ec7c244f7f84055501eb75a9264a8372e5fcfe9c230c01c1fdf8fb95da5d		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80622 bytes

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