PDF malware analysis — malicious · 2fcd2994aa1b2c98

MALICIOUS

PDF

26.2 KB

MD5: b9b5bdf6dc76e189219de7e298776627 SHA-1: c146835bfc7bc4c31bb0ffec6e2fbd7eddbbee98 SHA-256: 2fcd2994aa1b2c98765ca0816423a6db254553289227424c0a2d6a4a4d960f3d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV and an ML classifier, indicating it's likely an exploit delivery mechanism. The presence of an embedded script payload and an embedded file further supports this. The specific ClamAV detection name 'Pdf.Exploit.Dropped-78' suggests it's designed to drop and execute a secondary 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 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.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `df1670b1d079a1cd63dba3dae81b9d99fa1e3ac88b1373cd4b423ab61021f79b`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	26024 bytes

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