Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c848cadccc6c3fe…

MALICIOUS

PDF

100.7 KB
MD5: 108eaaa4a007a776e28afc609caa0e68 SHA-1: 516e065ec44434c0e0a2d65eec6e0282cd948662 SHA-256: 8c848cadccc6c3fec78695b59cfc06bf6d8997dc000e14a9ceffab10aee974a6
118 Risk Score

Malware Insights

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

The PDF file utilizes XFA forms, a known vector for exploitation. A high-confidence ML classifier and ClamAV detection indicate malicious intent. The embedded script payload, though not fully detailed, is the likely mechanism for delivering the exploit. The presence of XFA and embedded scripts points towards an attack pattern focused on exploiting PDF vulnerabilities.

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
  • Embedded script payload in PDF stream medium 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.
  • 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://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_00000246.bin
18dd11c2b01a2ab9712b3f5d3c9bb1751c4406234c4f64fc9fbd748ce70fde85		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102374 bytes

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