Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d90010b1c71696…

MALICIOUS

PDF

100.7 KB
MD5: dc79ad9d408dd9c3c647978e4e1481d7 SHA-1: 4fdffa498a1f5c659877a49ef47133fccedd91b6 SHA-256: d3d90010b1c7169663db321b4c147054cfa6490eabc9997e965750126b25b33c
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script payload within an XFA form, as indicated by multiple heuristic firings including a critical ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. The embedded script is likely responsible for executing the malicious payload, although its exact function cannot be determined due to obfuscation. The presence of XFA suggests an exploit targeting Adobe Reader or similar PDF viewers.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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_00000246.bin
e35eee503737d3661c943a23d298c7b1c41f8bf078eaba9658aec2dc2cca98d2		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102347 bytes

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