Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65d671d8b3c66a4…

MALICIOUS

PDF

19.2 KB
MD5: 7e05f4ed7b7b6ee8aabb2be46ac466cc SHA-1: b36115c0705e43364f4328517cb9a72975f0c284 SHA-256: c65d671d8b3c66a456b2de937357e67eef4b4d2a4410352ec2ac4c17a4d18b90
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' and the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic indicate this PDF contains and likely executes an embedded script. The embedded file artifact further supports the payload delivery. The document body content is not sufficiently readable to determine a specific lure, but the overall structure points to a malicious PDF designed to drop a secondary 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
d60f60d38d827ccb623ef1f8f807eb359b5a70ef9243f43d7c09ab63e833d6f1
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18880 bytes