Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a19bac946a457de…

MALICIOUS

PDF

79.4 KB
MD5: 2373ccf9e540bc319260582d92613fb8 SHA-1: 1e531a9d40d1d6cfdefba1b62648b49c2e53bf6f SHA-256: 5a19bac946a457dec3f3991f9a4e06ab4a6d290548996c5647ae089404337630
120 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded script payload and utilizes XFA forms, indicating an exploit attempt. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact functionality 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_0000023c.bin
db422ba5bec42b5680fa37016561ce3d93843b88aa8519f7ebed570cbe32a8ea		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80622 bytes

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