Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd88359fe7dff431…

MALICIOUS

PDF

42.6 KB
MD5: 3ab1a53e51ab5259e782d1b50512ff64 SHA-1: e1e75e744ae3f28e2c34de45f58dd6b83c65f891 SHA-256: dd88359fe7dff4315baf3aa7607b58116d284e07a5816d5b12e3ca55edd9230a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded script content and is flagged by ClamAV as Pdf.Exploit.Agent-36830, indicating it is designed to exploit a vulnerability. The embedded script, although obfuscated, suggests an attempt to download and execute a second-stage payload. The presence of XFA forms and embedded files further supports the malicious intent.

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
70cf18a4e06bc667cde571256432c0d7f8a3c338f7bd516b9b3f6a1e5e7b76a7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42907 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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