Malicious PDF — malware analysis report

Static analysis result for SHA-256 93dd884b72551182…

MALICIOUS

PDF

12.1 KB
MD5: 85700f7536546ecaec92fb0a459d8b50 SHA-1: 31445d90cb08b275d0f42c5160673d9704aa5600 SHA-256: 93dd884b72551182cfc95a38e7a1133d75c3610bf63e42648d8453df46b69a1d
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV with the signature Pdf.Exploit.Dropped-78. Static analysis revealed an embedded script payload within a PDF stream, indicating the document is designed to exploit a vulnerability and deliver a secondary payload. The presence of XFA forms and embedded files further supports its nature as a potentially malicious document.

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
0e4b0955714f3fba1a41006538201dd0466be5adef5b3dfe3e053ce3311a7d14
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11654 bytes