Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b25d56c65d5e102…

MALICIOUS

PDF

97.0 KB
MD5: 03b3397bd30e6200c7b23befb6f15f45 SHA-1: d2209d2b7b104549b696dc1dd08fa4a58127d4e7 SHA-256: 1b25d56c65d5e10289337b921d56acaf9a02599ebb1a1c3e0a8a6f7c9546874f
118 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-6136306-0' and a high ML score indicating maliciousness. The presence of an XFA form and an embedded script payload suggests an exploit targeting PDF viewers. The embedded script is likely responsible for downloading and executing a second-stage payload, though its exact functionality is obscured.

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
07713c914725de61a587a2d725bb6459d73fff00ae5bd60bedd09a47d1cab9cb
pdf-embedded-script PDF raw stream script payload at offset 0x26A 98653 bytes