Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d718df62092cbd9…

MALICIOUS

PDF

11.8 KB
MD5: 89abbc1c6be60fc13eb1b0c2c3c6387b SHA-1: 2c12589f19c324882710af819d5dba8446bf3a56 SHA-256: 3d718df62092cbd91b247d68cf084a1bde5f975099d92a6bde8f515112c53b53
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF file was detected by ClamAV as 'Pdf.Exploit.Dropped-78', indicating it contains an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic confirms the presence of an embedded script, likely used to deliver the exploit. The embedded file artifact further supports the payload delivery mechanism. The exact nature of the script's action is not detailed, but its presence within an exploit-carrying PDF strongly suggests it's part of the attack chain.

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
68de55bebb4927b5a237dfb340bf338b267c758c2b2b44abb4787ee54a9ff9f1
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11323 bytes