Malicious PDF — malware analysis report

Static analysis result for SHA-256 276c8bd8e99637f7…

MALICIOUS

PDF

100.5 KB
MD5: 1651ccc76dc87ca19967de18291498b0 SHA-1: dbfcebc62b9bb384d28a61e1ae8a821b22982e8e SHA-256: 276c8bd8e99637f770cd8b6d4665738ba5100ea377eeb694fc98af4adc3d891e
118 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and confirmed by ClamAV detection as Pdf.Exploit.Agent-6136306-0. The ML classifier also flagged this PDF with a very high probability of being malicious. The XFA form structure suggests a potential exploit targeting XFA processing. The embedded script is likely responsible for executing the malicious payload, leading to the overall malicious verdict.

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_00000246.bin
7a2b2748b71e0fe2d39897ffaccb2abd9cd4824498b28e71d54d8a5bc31f0f91		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102152 bytes

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