PDF malware analysis — malicious · 18f759d45151b274

MALICIOUS

PDF

12.3 KB

MD5: 6286be6a0d9519bf82f8b4a91a15b5a0 SHA-1: b45770d0cc9a979c0d8b6ad787158621b691dbca SHA-256: 18f759d45151b2746065307c44675c302375ba38970fb753dce43b6fb2f14f0d

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains embedded script content and is flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Exploit.Dropped-78. The ML classifier also strongly indicates maliciousness. The embedded file artifact suggests a dropped payload, likely executed via the embedded script.

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` `e6f83202fc5e561eea3bf13038e5eeb4bf981a97ea2e52139208abb6420313d9`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11813 bytes

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