PDF malware analysis — malicious · 27565423d6f4b3b7

MALICIOUS

PDF

18.9 KB

MD5: bc7d2b3745a4c7d9fbe5187a967ee657 SHA-1: c5847b68223709baec669f917b03679a3b8f63a0 SHA-256: 27565423d6f4b3b7682faa023e9a20c4ee0c89774fa757127ce869c3f635e188

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV detection and high ML classifier score indicate this PDF is malicious. The PDF contains an embedded script payload, suggesting it's designed to exploit a vulnerability and download a secondary stage. The embedded file artifact further supports this delivery mechanism.

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` `853f49fb1a36734566c804009fb9b3505f8e75a4839defcd7bff58165666dfab`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	18555 bytes

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