Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5549eb6abe2af11…

MALICIOUS

PDF

97.1 KB
MD5: 9b2622560f10feb2c15422c7f3aa262e SHA-1: 40819fe66d5bbf13a1f6569dd9e48a604723a06e SHA-256: c5549eb6abe2af11fa1581c721aa78c6e550879b5b49e00b262a7450b32bcbc3
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: Malicious PDF

The PDF was flagged by multiple high-confidence heuristics, including ClamAV detection as 'Pdf.Exploit.Agent-6136306-0' and an ML classifier with a score of 0.999992. The presence of an XFA form and an embedded script payload indicates a likely exploit attempt. The embedded script is too large and complex to analyze statically, but its presence within an XFA PDF strongly suggests it is used to download and execute a second-stage payload.

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
61671745276deb1a4cb141743b3ea240f98836edc97c7c6cba2cb69502b0fbe8
pdf-embedded-script PDF raw stream script payload at offset 0x26C 98659 bytes