Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9aa0d2d53f22e1…

MALICIOUS

PDF

12.4 KB
MD5: 646dae01c91cd758ff55683da20a8c49 SHA-1: 32dcea9cc90efca2d73e2d21706abf06330429b4 SHA-256: 2f9aa0d2d53f22e1c6e72e80509fb52ec1f0fb7ebd98b23c69a744ef6c3f6999
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious and designed to exploit vulnerabilities. The presence of an embedded script payload further supports this, suggesting it's intended to download and execute a secondary malicious file. The embedded file artifact is likely the delivered payload.

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
7ccbc4b03616c9f9544c1011597177121bc4a478d362f9155b6ad35928d67e3d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11927 bytes