Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8d0766f383b7b2…

MALICIOUS

PDF

42.4 KB
MD5: 4b3b457ba8b1a3ea40779817dd5bf167 SHA-1: 708522b0f13e315568437f53336a39590eabed35 SHA-256: 4c8d0766f383b7b2aa3e9ec31a4a480eeaddd0537c2a37b83a3be3038f45389f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detection (Pdf.Exploit.Agent-36830) confirms its malicious nature. The embedded artifact 'embedded_file_obj0008.bin' is likely the delivered payload. The document body content is highly obfuscated and does not provide clear user-facing lures.

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
4bd76f1da05f5c3a3c7e9a64014892f4cdb4c2b336e9a543629ddef1559705ce		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42660 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.