Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad81b9a46b4ca91…

MALICIOUS

PDF

97.1 KB
MD5: 9c5ec086275b08f579edff9ce41a794e SHA-1: f10416ae947804f1a3ccd0ef470d90d959ed7601 SHA-256: bad81b9a46b4ca9163808e4f4e22fee14d90468f5e2decf336f467636a759c5d
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF exhibits characteristics of malicious intent, including the presence of an XFA form and an embedded script payload. The ML classifier and ClamAV detection strongly indicate maliciousness, specifically identifying it as Pdf.Exploit.Agent-6136306-0. The embedded script is likely responsible for executing the malicious payload, although its exact function is obscured by the PDF structure.

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
1be68dad65461b03932865d8af7bda6c93b3e34ea6ea0cf0af54b32394c6830d		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98659 bytes

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