Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99df1718747035f…

MALICIOUS

PDF

12.0 KB
MD5: 7fb2325a4ef7113336c28a371ac0107c SHA-1: c6891ca7dcf4212d336b319990a6d6b8307fe59b SHA-256: c99df1718747035f6e17470d2591633c8929dbca89a0dac4c2ee53602e5496ac
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates a known PDF exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic confirms the presence of embedded script, likely responsible for downloading and executing a second-stage payload. While the document body is not informative, the embedded file and script heuristics point to a malicious PDF designed to exploit vulnerabilities.

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
06e08eb7d3599fd1b80b6d46b486b4813b65d5a549dabee7a9f0badfb084b172
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11531 bytes