Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db165887a3ce791…

MALICIOUS

PDF

94.1 KB
MD5: f782a83a5d721338d3479f67ebe70aea SHA-1: 55caba7d27c5f76a6d3f3c34db3dd0d73d3b3020 SHA-256: 8db165887a3ce791b7105d0892ab37d767dccf28054674c92760da29aa6da263
178 Risk Score

Malware Insights

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

The PDF was flagged by multiple high-confidence heuristics, including ClamAV detections for 'Pdf.Exploit.Agent-6136306-0' and 'Pdf.Exploit.Agent-36769'. The presence of an XFA form and an embedded script payload indicates an exploit attempt. The embedded script is likely responsible for delivering the malicious payload, though its specific actions could not be determined due to obfuscation.

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
59852a537c491c5557493072a344e8c7d27d359d973379f3755b5ee8269f7eb7		 pdf-embedded-script PDF raw stream script payload at offset 0x246 95636 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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