Malicious PDF — malware analysis report

Static analysis result for SHA-256 55096a32d034e976…

MALICIOUS

PDF

12.1 KB
MD5: 61d8098545cd5e9ade71111c7d708201 SHA-1: 2de9de68f27165fa7d747ab912a6c4d5c4a3cb19 SHA-256: 55096a32d034e976f75b848aa629711de2f4e78fc76dc988b0fe83c0f4ccc4aa
96 Risk Score

Malware Insights

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

The critical ClamAV heuristic indicates this PDF is a known exploit, specifically 'Pdf.Exploit.Dropped-78'. The presence of an embedded script payload and an embedded file further supports its malicious nature. While the document body contains obfuscated text, the primary threat appears to stem from the embedded exploit and payload delivery mechanism.

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
79f18cab29c4c495c92a0efd58077c1b9c359840767df5b8a4f5ae90287a3337
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11649 bytes