Malicious PDF — malware analysis report

Static analysis result for SHA-256 54120d36b18c923b…

MALICIOUS

PDF

46.5 KB
MD5: 41e6022c2156c3d686bfe313e1d8ae47 SHA-1: c7a9cab0497eed0b4e3d0bbe62a2acfa59dec423 SHA-256: 54120d36b18c923b2431986d00c7070756c399db2c690b7d1d401917e50bd61d
156 Risk Score

Malware Insights

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

The PDF file contains embedded script payloads and has been flagged by ClamAV as Pdf.Exploit.Agent-36830. This indicates the document is designed to exploit vulnerabilities, likely to download and execute a second-stage payload. The presence of XFA forms and embedded files further supports its role as a malicious document.

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
62bf886f317589f99e234732eb07b1391de0d13f35b6a10961ae1118c8ac2065		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 46837 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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