Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabb275118c1e723…

MALICIOUS

PDF

42.5 KB
MD5: 5322583e02556ee9668ce5ab8ebbf9c3 SHA-1: 345b13bb21a74112fee7dc61e384c65d8de36938 SHA-256: dabb275118c1e723e9e5c56a081f7f96112821f12c0e9e3e04123364d04f5241
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution - Malicious File

The PDF file contains an embedded script payload and an embedded file, as indicated by multiple heuristic firings including critical detections from ClamAV. The embedded artifact 'embedded_file_obj0008.bin' is likely the malicious payload. The XFA form and embedded script suggest an exploit targeting PDF vulnerabilities.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
bfaab2f1b7fbc5a80824f32c5f0692eef1292ba6871480c180d7b604a4c55817		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42787 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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