PDF malware analysis — malicious · 44b7b03e9ec5a3a3

MALICIOUS

PDF

11.8 KB

MD5: 32726af3c7a32e8fef82b2731c223bbf SHA-1: e18cbf2dbc8b02ad60a4bee1305052066e7d1dc9 SHA-256: 44b7b03e9ec5a3a3305cc6b296103742d4615589f221070dd30c567ef6a3ba8f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-78' and a high ML score, indicating malicious intent. The presence of an embedded script payload and an embedded file further supports this. The embedded file is likely the delivered 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` `4a583997622ef46ecaef03bb98481677f80db50b8ee2ce922fa62e78273cd911`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11277 bytes

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