Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c355052cedc4ab…

MALICIOUS

PDF

79.1 KB
MD5: 5762f74e8737334635d1b45dea844c65 SHA-1: f576442b0a9306dc37b462ba14fcad72f9c167d7 SHA-256: 92c355052cedc4ab0a99aec790c06469aa96978558d27934dcc34d37f8d00e69
148 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with multiple critical detections, specifically flagging it as 'Pdf.Exploit.Agent-6136306-0' and 'Pdf.Exploit.Agent-36769' on an extracted artifact. The presence of an XFA form and an embedded script payload within the PDF stream indicates an attempt to exploit PDF viewer vulnerabilities. The embedded URLs are related to XFA specifications and are confirmed benign, providing no direct IOCs for malicious activity.

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
0d432e3d577bba7af15c3a7e3d97b445f420b259380712f97ea7bfd1a255e711		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80297 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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