Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62a95eb277b94c7…

MALICIOUS

PDF

79.0 KB
MD5: 32b996907ab2c29ae4dc97c2c3f1b261 SHA-1: a01a2aec45c5cf86e1d7a95db02c21dc7fb146d3 SHA-256: d62a95eb277b94c777b57d241efa50a71f5d43fc48f98c3890428d5a809ac920
178 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including ML classifiers and ClamAV, indicating malicious intent. The presence of an XFA form and an embedded script payload suggests an exploit is being used to deliver a secondary payload. The embedded artifact was also detected by ClamAV. The specific exploit and payload are not fully detailed in the provided evidence.

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_0000023e.bin
ca5e9e92ebb2e48e4b833d27d8b23600e62b87eb72b87aeab5c290c912f61ec7		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80211 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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