Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd29a1ac48953faa…

MALICIOUS

PDF

97.0 KB
MD5: b167e56a07a99c1e432b665666659ef6 SHA-1: a7e52468ee36d1e896bf55e1d21a92724914abf2 SHA-256: dd29a1ac48953faa3f15e570a322fff6f99c9a6edbb6a61fa68028e2c44c883c
118 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically identifying an embedded script payload and XFA form usage. The embedded script is likely responsible for executing the exploit, leading to the malicious verdict. The presence of XFA forms is a common technique for delivering exploits in PDF documents.

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_0000026c.bin
f68fabc8eacc22282cfc6365e4ce889ac1afdb12b599b55452d0955df2e7d902		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98655 bytes

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