Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f284ffefb6020cf…

MALICIOUS

PDF

11.7 KB
MD5: 8ec96ee67ce8f60ac1f391be5721ba7c SHA-1: 0b333689f68d33ffcb1e8b89a93de8b09671184c SHA-256: 9f284ffefb6020cf7980aecd65b51c35a56caf1102467774e017e36a7e75992c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Dropped-78, indicating it contains an exploit and likely delivers a secondary payload. The presence of an embedded script payload and an embedded file further supports this assessment. The embedded URLs are confirmed benign and do not contribute to the maliciousness.

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
f93ec4b9c0ac218d793ff868e2c24e9356f9f33cb0922085728e15d8dd233815
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11274 bytes