Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b0cb0b404d0a1d…

MALICIOUS

PDF

19.4 KB
MD5: 661b7a933f0d1a69a55f91f7b6b8b5c2 SHA-1: 829d1675c6762348da4c548cd0c20a742b826bb1 SHA-256: d4b0cb0b404d0a1dc958de43fdaedf2f105ebc9f192067d90725e513a51dd0f4
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 malicious intent. The PDF contains an embedded script payload and an embedded file, suggesting it's designed to exploit vulnerabilities and drop further malware. The presence of XFA form elements and embedded URLs, while some are benign, are common in exploit documents.

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
2e4aaba6f80d251391f808ca1e539f6631b3d48d19d8223f4dd2b6e0a075904a
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19113 bytes