Malicious PDF — malware analysis report

Static analysis result for SHA-256 4acc54d8ba8aa20d…

MALICIOUS

PDF

12.0 KB
MD5: 88954252f7771313606d9e815e29cb4d SHA-1: 3a7bf923949cdb887b5f734f75b3e239238dac82 SHA-256: 4acc54d8ba8aa20dfc2f76c91310a0ecc5b29bf7e43d6c49b851f9dd0efe2d9d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF file contains embedded script payloads and is detected by ClamAV as Pdf.Exploit.Dropped-78. The presence of XFA forms and embedded files suggests an attempt to exploit PDF vulnerabilities. While specific script content is not fully detailed, the overall structure points to a malicious 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
36f527e5b48fe6697b27e03e65c80decd3f9fbcfd63de9bedb25daa6906c6c0d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11510 bytes