Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e3f88c31e385e94…

MALICIOUS

PDF

100.7 KB
MD5: b79273d473ac45702eb1ea68954e5bfd SHA-1: 5258761fd4ccf9b61cf01b80e6e8bc978b7e52b8 SHA-256: 3e3f88c31e385e94550b918f006e987d9627d09ca048d7a3aa67637bb7d6b416
118 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and the presence of an embedded PDF script artifact. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving an exploit. The XFA form heuristic further points to a potential attack vector leveraging Adobe's XML Forms Architecture. The embedded script is likely responsible for downloading and executing 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_00000246.bin
21a45fc82405037de53b7fd31e916ac071d7f98deb9ca89f9f5b220d799bf449		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102347 bytes

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