Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abd938d60fc76f7…

MALICIOUS

PDF

100.5 KB
MD5: 974225f12ca744750b4f5283799f6d0f SHA-1: 0b33df1a794b1fa7a555d7580fa47e12375eefe9 SHA-256: 3abd938d60fc76f779dd02faff9875008cef9243b33b2f6f0682ebaf213dac8c
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file utilizes XFA forms and contains an embedded script payload, as indicated by multiple high-severity heuristics and ClamAV detections. The ML classifier strongly flags this PDF as malicious. While the document body is not directly informative, the presence of an embedded script suggests it is designed to download and execute a second-stage payload. The embedded URLs are likely part of the exploit chain or C2 infrastructure.

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
028f6902fccc54ca1bca95ab306094e0a03d4057d3af835570937ab50ec851fe		 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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