Pdf.Exploit.Dropped-78 — PDF malware analysis

Static analysis result for SHA-256 790af02e7b90a58b…

MALICIOUS

PDF

12.3 KB
MD5: 3cf7294ef189c1078a8713e187883a1c SHA-1: b27c7aea2d5fa63f71527c81af3dc45ced2fc14e SHA-256: 790af02e7b90a58b92bc8428c346be0d2bfc50e71feea4487ea63b34ed280437
96 Risk Score

Malware Insights

Pdf.Exploit.Dropped-78 · confidence 95%

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' and the heuristic 'PDF_EMBEDDED_SCRIPT_PAYLOAD' indicate that this PDF file contains and attempts to execute an embedded script. This script is likely responsible for downloading and executing a second-stage payload, as suggested by the embedded file artifact.

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
ee44c0a5140c54d1cdfdfe7b110a97e984dad7d97015cd2e6a2ff802d0a0f514
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11842 bytes