Malicious PDF — malware analysis report

Static analysis result for SHA-256 e056af7597314fa8…

MALICIOUS

PDF

79.1 KB
MD5: 2c398509f0aeedb45cccb36d0f576d40 SHA-1: 1381721467507d21111382913acb1113188947b6 SHA-256: e056af7597314fa808f16dc7ff4b217352d5067218d10e11ea369e4164f2f051
180 Risk Score

Malware Insights

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

The PDF contains an embedded script payload and is flagged by multiple detection engines, including ClamAV with the signature Pdf.Exploit.Agent-6136306-0. An extracted artifact was also detected by ClamAV as Js.Exploit.HTML-29. The presence of XFA form elements and embedded scripts indicates an attempt to execute malicious code, likely to download and run a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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
4d0872911796db2ab52ad43d988d1f81d2b4b38057e64d30678625f0b4b6a6c6		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80285 bytes
Detection
ClamAV: Js.Exploit.HTML-29
Obfuscation or payload: unlikely

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