Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9bb7debe4c462fe…

MALICIOUS

PDF

97.8 KB
MD5: 7bcf22f4d8dbb054b5e1dc9e09ed02e0 SHA-1: 8c341b52a9f2862d5335e8f02903e15f5f867209 SHA-256: a9bb7debe4c462fef472aa89db740158f4fbe19c0ba542b5fde61720154293cf
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file utilizes XFA forms, a known vector for exploitation. A critical ClamAV detection (Pdf.Exploit.Agent-6136306-0) indicates a known malicious signature. An embedded script payload was also identified, suggesting the PDF is designed to download and execute a second-stage payload. The exact nature of the script's execution is unclear due to its embedded nature, but the overall pattern points to a malicious exploit delivery.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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_0000026c.bin
572fc9e95e49208dc1a649a06ed9948b0cc50a7ddca86abc57e90aeea758527d		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 99407 bytes

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