Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8680b8648c21783…

MALICIOUS

PDF

11.7 KB
MD5: 58ecbbf26518481108cef1f50216e508 SHA-1: ad711dbf07bcc9634d5531d121b3b3084ae2493b SHA-256: b8680b8648c217836b98f21d3c746186a28ba20efc367a7373bc04be7c31f359
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious and designed to exploit vulnerabilities. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is a dropper for a secondary malicious payload. The document body content is not user-readable and appears to be obfuscated or malformed script elements.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
0fcda0c59297c41884a2aac8d7c1a1bddb480c0de5bd86e841e7a05b1e593bb3
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11229 bytes