Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3836c713be83878…

MALICIOUS

PDF

100.5 KB
MD5: af8c34330818c327eadd20b473e5993d SHA-1: 47a5045a7a7e42ad144b51bb738492e59ffb3a5c SHA-256: d3836c713be838783d640492022d0a7eb963ee1acdac0f1d27860f7e0211f782
178 Risk Score

Malware Insights

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

The PDF file contains embedded scripts and was flagged by multiple heuristics and ClamAV as malicious, specifically as Pdf.Exploit.Agent-6136306-0. The presence of XFA forms and embedded script payloads indicates an attempt to leverage PDF vulnerabilities for code execution. The embedded script likely downloads and executes a second-stage payload, contributing to the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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
2141ff94a84a617cb1b819c1fb2e2ccdc1a6b7c782d83a003d6b4af3dcb608c1		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102156 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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