Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea956aa1551681b9…

MALICIOUS

PDF

12.0 KB
MD5: 59621786efec26bfc0dfda5845bc9547 SHA-1: 20f45a2756d0d3dadf73a14c920eb3cecea0e6d5 SHA-256: ea956aa1551681b93928007a6a6824e8b8b8fb9755d0fe74552d6fdf3d5e16d5
96 Risk Score

Malware Insights

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

The PDF file contains embedded content and is flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it's likely an exploit delivery mechanism. The presence of embedded script payloads and XFA forms further supports its malicious nature. While specific script actions are not detailed, the overall structure points to a common PDF-based exploit attack pattern.

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
fb0507553a67b350de801c0f93f0b6110664c7177b022df13ca4d2163e02b657
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11537 bytes