Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0865f0f0cbb4f5…

MALICIOUS

PDF

42.7 KB
MD5: 5da5ce990c1537090c337aa5cb00fdf1 SHA-1: 49a47e62944c2a9794146b027980d899179a03d3 SHA-256: bb0865f0f0cbb4f5fbb71d855a6e3caf700a3187edc997aa54e91746fc62ac76
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: Malicious PDF

The PDF file contains embedded script content and is flagged by ClamAV as Pdf.Exploit.Agent-36830, indicating it is designed to exploit vulnerabilities. The embedded script, although obfuscated, appears to be part of the exploit mechanism. The presence of XFA form elements further supports the likelihood of a crafted PDF exploit.

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
da232e4fad5ed0ae4c93d66dac590da841de1c5c9494cffb5a3b8e48419de8ed		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43010 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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