Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f196e76106e299…

MALICIOUS

PDF

50.9 KB
MD5: cf3823b0f95b74c2578197d8a853e7bf SHA-1: edc1dee1114169f87e91af2aa3e4055f99f40983 SHA-256: 39f196e76106e299f430bf1f53dca4d0638298fcb4c0e22d0d6984cbd8f46122
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell T1204 User Execution T1204.002 User Execution: Malicious File

The PDF document contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and confirmed by ClamAV detection as Pdf.Exploit.Agent-6136306-0. The ML classifier also strongly flagged this PDF as malicious. The XFA form structure suggests a potential exploit targeting XFA processing. The embedded script is likely responsible for downloading and executing a second-stage payload.

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_00000240.bin
b6a57ddac2d36f995df93ff60bb5b664ce2d5a6ded2c3fd90a7b5d3b3211e217		 pdf-embedded-script PDF raw stream script payload at offset 0x240 51438 bytes

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