PDF malware analysis — malicious · adefe51b47714216

MALICIOUS

PDF

13.0 KB

MD5: e50dbf58d6abe5334e52c5c2bfcfa351 SHA-1: bb2c35ad62b88be78c1b4318d1072cacaefe0079 SHA-256: adefe51b47714216f571527e0bcd538942f5bb0fdd4c766f9807290e0f538fa3

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier as malicious with a high confidence score. Heuristics indicate the presence of an embedded script payload and an embedded file, suggesting it's designed to deliver a secondary malicious component. The document body contains obfuscated JavaScript, likely intended to execute the embedded payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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/xci/
- 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` `651523b8209d723763e1f4b6e4618576bc7df10a4c4c2241a7a8a53f67a3935d`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD5	12587 bytes

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