Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18f2392e600cd44…

MALICIOUS

PDF

97.8 KB
MD5: faa6b95b13ed8972b224466649212a9b SHA-1: 8e22a5cbab3cfc856f44b4c23c61ce2b0be10e74 SHA-256: b18f2392e600cd447e731511b3aff761beaea44c317a54b47a2f23c0c00f18b7
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1204 Malicious Link

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and the presence of an embedded artifact. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to exploiting PDF vulnerabilities. The XFA form detected also points to a complex PDF structure often used for exploitation. The embedded script is the primary mechanism for delivering the malicious payload.

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_0000026c.bin
d1501c87f266e35aa1cb13e31938f98a7f86e94ea276f9fd89745d9852f10d19
pdf-embedded-script PDF raw stream script payload at offset 0x26C 99411 bytes