Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2879a3df4966f9…

MALICIOUS

PDF

12.8 KB
MD5: 7abb53beb07ef15ab3934ddc51b3bfa2 SHA-1: 57a93eeefbe5bc7165e80c910a2d9887811fb2a8 SHA-256: bf2879a3df4966f9fcad6d9521349dc27d92baf739d62e9ac997eaaa314460e6
88 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and confirmed by ClamAV detection as Pdf.Exploit.Agent-6136306-0. The presence of XFA form elements (PDF_XFA) suggests a potential vector for exploiting vulnerabilities. The embedded script is likely responsible for downloading and executing a second-stage payload, as is common with this type of exploit. The embedded URL, while seemingly benign, is part of the file's structure and could be used in the exploit chain.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
d67c4392bea5383b536d7eb219749e5ffebd7dcf3e5bce14ae5fdb6cab81968b
pdf-embedded-script PDF raw stream script payload at offset 0x359 12362 bytes