Malicious PDF — malware analysis report

Static analysis result for SHA-256 39d2d4f889b7af29…

MALICIOUS

PDF

100.6 KB
MD5: b0757dacd2319b1e4280f1953a809c05 SHA-1: 33dee8ad03151a0b52d94c0f698158284b5d906f SHA-256: 39d2d4f889b7af29acc780f7001a4f911d69bcd8b572b310fc69751b5456d618
118 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and triggers XFA form heuristics, indicating it's designed to exploit PDF vulnerabilities. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script is likely responsible for downloading and executing a second-stage payload, as is common with this type of exploit.

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
729865cd3ee68cba7a36dbe108965bd7a8c2ae9912c91182c54fc8b4fc8bff1c
pdf-embedded-script PDF raw stream script payload at offset 0x246 102262 bytes