Malicious PDF — malware analysis report

Static analysis result for SHA-256 96151fa99c08da1d…

MALICIOUS

PDF

13.5 KB
MD5: de8877f53a06faed5a04c4f7171ac14e SHA-1: e967afa14cf47d5ab02b33906b3b4551d42415ee SHA-256: 96151fa99c08da1d7802a6c74d105b910739c0c434f47e1799e48e8054f54c9a
66 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The ML classifier strongly indicates this PDF is malicious. The presence of an embedded script payload and an embedded file suggests it is designed to deliver a secondary exploit or malware. The embedded URLs, while not directly malicious, are part of the document's structure.

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/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
1464981ce051308544876928e964c35a850738dbae2e2a0fa962ad9ea6345f71		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 13081 bytes

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