Malicious PDF — malware analysis report

Static analysis result for SHA-256 886dafb5a5f67a4b…

MALICIOUS

PDF

97.3 KB
MD5: f4ef79ddb1f49bd38efcf85e53ef1297 SHA-1: 0aa9009f86387f0dd10f4f3ed472ad07d0d7b25f SHA-256: 886dafb5a5f67a4b7042447d6a51f50c2cc40b538bd4be76d0feabd2872d5b1c
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 is designed to exploit PDF vulnerabilities. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded script likely downloads and executes a second-stage payload, contributing to the overall attack.

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
ab1bcdcd87d6626e8dccad7671232685255e8aea903256e859654d7b5f6db703		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98867 bytes

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