PDF malware analysis — suspicious · 86bcb35e43000651

SUSPICIOUS

PDF

35.3 KB

MD5: ec2bd10422dc249e7cad2667b98ca2fb SHA-1: 57cf39052cadaa316fdde94e9ed5695b3ab5035e SHA-256: 86bcb35e43000651d9088bbe8773623030fab8bb4a1e3e33fd6f817175d41923

56 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier with high confidence. Heuristics indicate the presence of embedded scripts and an embedded file, suggesting an attempt to exploit vulnerabilities and deliver a payload. The benign URLs found are likely unrelated to the malicious functionality.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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` `ff0c312a445976aac4f28a1791d222e39568ee3e5ad973e45e0e171ab7c833d7`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	35419 bytes

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