Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc50f3d28a544538…

MALICIOUS

PDF

12.8 KB
MD5: ae7dee74b16b47f87e7a8187fc438ffd SHA-1: 12a8d97a55d43eba3e9b0dc837a43acf6a5036bd SHA-256: bc50f3d28a544538571c07ed06c233d4f6bb220c7d893ba55c6dc6c0e7be8dc9
118 Risk Score

Malware Insights

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

The PDF contains an embedded script payload, flagged by heuristics and a machine learning classifier. ClamAV also detected it as Pdf.Exploit.Agent-6136306-0. The embedded script is likely responsible for downloading and executing a second-stage payload, contributing to the malicious nature of the document.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
f74b33e82ee45b538c7a3661ec5b07979ae748dc6b0d24bf4d7861e0ab4a4e84		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12374 bytes

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