Malicious PDF — malware analysis report

Static analysis result for SHA-256 22124970df08a3f6…

MALICIOUS

PDF

101.2 KB
MD5: a2c0f23697c40d9fc7cbaf915d68c983 SHA-1: 59054089bdbe9b144154f9bc69a1d2a330e5d276 SHA-256: 22124970df08a3f63cbd802b5516c4784b11aa67c6fca8e2d7219638a0abaddd
118 Risk Score

Malware Insights

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

The PDF utilizes XFA forms and contains an embedded script payload, strongly indicating malicious intent. The ML classifier and ClamAV detection further confirm this. The embedded script is likely responsible for downloading and executing a second-stage payload, though its exact functionality is obscured by obfuscation. The presence of XFA suggests an exploit targeting PDF reader 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_0000025e.bin
98ecb976dbf6108113cd50e6259e8dcbf0c5cff59ac462423ba722e36a9021c9		 pdf-embedded-script PDF raw stream script payload at offset 0x25E 102925 bytes

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