Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d37245db1479d49…

MALICIOUS

PDF

19.2 KB
MD5: 581bae16356c63e18a4ee6d72c11bd80 SHA-1: 9b0d075ecb5c37f84e577ff2f1094153e9df8a72 SHA-256: 7d37245db1479d49439cfc5409ea0fdd1c96b6b6c219a8ee487760e6446b27f0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution

The PDF file was detected by ClamAV as Pdf.Exploit.Dropped-78, indicating it contains an exploit. Static analysis revealed an embedded script payload and an embedded file, both common techniques for delivering malware. The embedded URLs are benign or unknown, and the document body is not human-readable, suggesting the exploit is the primary attack vector.

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
77ff3eb72dd7683ffbd62020b6766afc79fc8e6bc872f74c17c0548f286bc478
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18877 bytes