Malicious PDF — malware analysis report

Static analysis result for SHA-256 809ee9514e06a3d7…

MALICIOUS

PDF

79.4 KB
MD5: c9ca477ff457d89f68e56e4011472014 SHA-1: 611403b658fefe230555bb15df3d6c02398625f7 SHA-256: 809ee9514e06a3d70809fe6bfc71220413b2d2a451aae0e5baea8ed3ddefab60
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1566.002 Phishing: Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Agent-6136306-0) and a high-confidence ML classifier. The presence of an XFA form and an embedded script payload indicates an attempt to exploit vulnerabilities or execute malicious code. The embedded script is likely responsible for delivering the malicious payload, although its exact function cannot be determined without further analysis.

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
053e03b7aeb266338e73a73969b08b9c4fee87ed0014e9ef044bc448ce607c7a
pdf-embedded-script PDF raw stream script payload at offset 0x23C 80622 bytes