Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b82e213f6591f3…

MALICIOUS

PDF

79.4 KB
MD5: d3473a6ce34ab06ad68ce8d0d8ff87c3 SHA-1: fc26c9ad104ef9c036a881693854917876e8702d SHA-256: d4b82e213f6591f316f38e5f11d11b91d4ec44ff9b367b1e25e48affa08a76ae
118 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and triggers heuristics related to XFA forms and embedded scripts, indicating an exploit attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script is likely responsible for executing the exploit, though its exact function is obscured by the PDF structure.

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_0000023c.bin
2fe107a5b410f8d3925bdc66b4c058227266f44c043f1e87fc3abb20c0e3cedd		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80624 bytes

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