Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5654d4e31836e05…

MALICIOUS

PDF

79.4 KB
MD5: e75a3efb53a7163fafb55411d2e2d664 SHA-1: 70b3c0fa48d67af1e0fad921a1180db29b38c568 SHA-256: f5654d4e31836e052f1cf30e42d2152216e52b1791e90f9b047621d75831360b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF utilizes XFA forms, a known vector for exploits. A critical ClamAV detection and a high ML score confirm its malicious nature. The embedded script payload, though not fully detailed, is the likely mechanism for delivering the exploit. The embedded URLs are likely part of the exploit chain or infrastructure.

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
40797221cae8a2745689b99d368c87384554f165bb668e05239a281638fa67b4		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80620 bytes

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