Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd06220cb4d5cea…

MALICIOUS

PDF

42.5 KB
MD5: 4c7f7a8986314253cddf1f4e145f9ca2 SHA-1: 1651bd70b3ca0a8cec225e0b38e8152d2025da49 SHA-256: 4bd06220cb4d5cea2200aaa068387001b2046caed93c2ceb8636f559cf314aa5
156 Risk Score

Malware Insights

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

The PDF document contains embedded script payloads and has been detected by ClamAV as Pdf.Exploit.Agent-36830. This indicates the file is designed to exploit a vulnerability within PDF viewers to execute malicious code. The embedded script likely facilitates the download and execution of a second-stage payload.

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
facdc8be6b5889cb6c3b598c0f06f2dd2042e1f71fc988ed2122d0761c06d5a5		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42720 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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