Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af566c104a08300…

MALICIOUS

PDF

79.4 KB
MD5: e68289c204a5c5317695505bf3177b08 SHA-1: eaff88a71db2821e2dcb837d0429561fe6c89be0 SHA-256: 2af566c104a08300ff315a425484af95eec60bf806c210d253e211dbc89dd8f2
120 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Agent-6136306-0) and an ML classifier indicating high maliciousness. The presence of an embedded script payload within a PDF stream, combined with XFA form usage, strongly suggests an exploit attempt. The embedded script is likely responsible for downloading and executing a second-stage payload, though 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
8634f1e561dc85c622c0b540b57003be88a51e926795538e73fcadbed29eba46
pdf-embedded-script PDF raw stream script payload at offset 0x23C 80622 bytes