Malicious PDF — malware analysis report

Static analysis result for SHA-256 4342ae0ec2d942b1…

MALICIOUS

PDF

26.0 KB
MD5: 84c2204820a27b20d991a12a43de64b1 SHA-1: 65662a6d49cbaec18b283b084a2cd349269a711d SHA-256: 4342ae0ec2d942b16026f274c377715db4926a12c96c13f65a9e37bf6ec8500a
96 Risk Score

Malware Insights

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

The critical ClamAV heuristic indicates this PDF is recognized as 'Pdf.Exploit.Dropped-78', suggesting it contains an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic further confirms the presence of embedded script content, likely used to initiate the exploit. While specific script details are limited, the overall pattern points to a malicious PDF dropper.

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
f4c5a4f62a39aff8d0aedfa5df9e2fa7f1023cedb211c47e30681973463a2f70
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 25870 bytes