Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7973b0c41aa7857…

MALICIOUS

PDF

12.0 KB
MD5: 74aa05aec301d902ae02a0182df8a508 SHA-1: 409b2f7671ecbe5c43742224d6733b74a478fc62 SHA-256: d7973b0c41aa7857f1f91a82590f81f79f65ce72ea393c47742febf47194a112
96 Risk Score

Malware Insights

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

The file is a PDF document identified by ClamAV as Pdf.Exploit.Dropped-78. It contains an embedded script payload and an embedded file, indicating it is designed to exploit vulnerabilities and deliver a secondary malicious payload. The document body content is not user-readable and appears to be malformed or obfuscated 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
d8816024d6ec15e14661c08f3162413a65ec5ec176ced541ea57c81332b8cfe2
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11542 bytes