Malicious PDF — malware analysis report

Static analysis result for SHA-256 d519904315a8c359…

MALICIOUS

PDF

93.4 KB
MD5: 970da15c7910ab7fd806748293df660e SHA-1: 7e27872f92dbea341918e74ae1650a2a1592994f SHA-256: d519904315a8c359c3e26d180dd698fc4b0e7c936675096151abc3359d9a380f
178 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF utilizes XFA forms, a known vector for exploits. The embedded script payload and high ML classifier score indicate malicious intent. ClamAV detections further confirm this, flagging it as Pdf.Exploit.Agent. The embedded script likely downloads and executes a second-stage payload, though its exact function is obscured by the PDF structure.

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
5b3960f0f82e94c81cf0f0cf151fe44b032186e43515401f00e9cad3f31193fb		 pdf-embedded-script PDF raw stream script payload at offset 0x246 94924 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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