Malicious PDF — malware analysis report

Static analysis result for SHA-256 4db9972e5b65a7d9…

MALICIOUS

PDF

97.0 KB
MD5: f48bb99bafe89babe37fa36a89710289 SHA-1: 2dc2ba81ce6c0aa8762508695e1be18c26905990 SHA-256: 4db9972e5b65a7d9bbc00f8993929d58b594ffb3bf749824ffb2f13bb09cc0e4
118 Risk Score

Malware Insights

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

The PDF utilizes XFA forms and contains an embedded script payload, strongly indicating malicious intent. The ML classifier and ClamAV detection confirm this, flagging it as Pdf.Exploit.Agent-6136306-0. The embedded script is likely responsible for downloading and executing a second-stage payload, though its exact functionality 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_0000026c.bin
6b688d34e04e1829a6c90452959669ea98b1cdbf9a91d50ebb4b16224f7009b0		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98655 bytes

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