Malicious PDF — malware analysis report

Static analysis result for SHA-256 10f119e64c572b47…

MALICIOUS

PDF

12.0 KB
MD5: e47c1253744365861e6f536e7cbd1f79 SHA-1: a036afae0055448d99608db37b3d1464f79b7f48 SHA-256: 10f119e64c572b476b45c16d9628b43720bb66427fc4cc01c0503809cb6a1437
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Dropped-78, and a machine learning classifier also flagged it with high confidence. The presence of XFA forms and embedded script payloads within the PDF structure indicates an attempt to execute code, likely to download and run a secondary malicious payload. No specific family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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 script payload in PDF stream low 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 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
3c94aaf507bc23ea0071203f3991f65b53f99a0001c46c0e0e47e0f97b26b430
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11580 bytes