Malicious PDF — malware analysis report

Static analysis result for SHA-256 d250d587ad65f9a9…

MALICIOUS

PDF

79.0 KB
MD5: 61884ba17bd9cebeae37a60d895f7bbe SHA-1: e4c9d694619edacb05e8d72459f77a99f875e289 SHA-256: d250d587ad65f9a9b61a09bfd2079365919442937eea01fe7de9d585ebeb181d
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF file contains an embedded script payload and triggers critical heuristics related to PDF exploits, specifically ClamAV detections 'Pdf.Exploit.Agent-6136306-0' and 'Pdf.Exploit.Agent-36769'. The presence of an XFA form further indicates a potential attack vector. The embedded script is likely responsible for delivering the malicious payload, although its exact function cannot be determined due to obfuscation.

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_0000023e.bin
fa6a345ace7e9e86e78cec3cddc3aef85b68bf189a67547e98b8567f39ff7a87
pdf-embedded-script PDF raw stream script payload at offset 0x23E 80215 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely