PDF malware analysis — malicious · 14bf99fef54c5e9a

MALICIOUS

PDF

19.1 KB

MD5: b1c49978d8b3cefba90e5822c653ef5e SHA-1: ee4a8732ae2aa4c1eb869e727da612405c78fc9c SHA-256: 14bf99fef54c5e9ad9cb38e3f4fa9301af2a39cd423ce5700d018bc2aef32c06

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV with a critical detection signature 'Pdf.Exploit.Dropped-78'. It contains embedded content and XFA forms, which are common vectors for PDF exploits. The embedded file and exploit heuristics suggest it's designed to execute a dropped payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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 script payload in PDF stream low 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 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.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `e7ea79f4fce02a4794aee99e4c2220e3b5a86dcb0e6e0cde54543731ef03201b`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	18847 bytes

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