Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f9dba97e6bb53eb…

MALICIOUS

PDF

97.0 KB
MD5: a0f1b3178cb9f9eef2f90ae30063fc80 SHA-1: 0b709dcb725aba09d147e0e8788d87d1c9237b80 SHA-256: 3f9dba97e6bb53eb5695b3cb776817e898ec136dd10f1870e82814afd6e54b49
118 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, flagged by heuristics as malicious and triggering a critical ClamAV detection for Pdf.Exploit.Agent-6136306-0. The presence of XFA forms and embedded scripts strongly suggests an exploit targeting PDF reader vulnerabilities to execute arbitrary code. The ML classifier also confirms a high probability of maliciousness.

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_0000026a.bin
b67bac8af33aa080812989603f4e2152f9d0f28287bbbb215c6e8c9344fbbd6a		 pdf-embedded-script PDF raw stream script payload at offset 0x26A 98655 bytes

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