Malicious PDF — malware analysis report

Static analysis result for SHA-256 003d23cf982500f4…

MALICIOUS

PDF

13.3 KB
MD5: 6318f6f5bf8fd1257d113092f9c77028 SHA-1: 11b7a92594327f8f6853d2938b74f40473364dd2 SHA-256: 003d23cf982500f438b56a4df2f6b5b4bd12fa1cdb5f797248de6960ef40156a
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter

The PDF file was flagged by an ML classifier with high confidence as malicious. It contains an embedded script payload and an embedded file, indicating an attempt to deliver a secondary malicious component. The presence of XFA forms and embedded files suggests a potential exploit or social engineering lure.

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.

FilenameKindSourceSize
embedded_file_obj0008.bin
14f5d2d6f3375335669f03f346f04ef58e94aa319d9a9a840ecec52fcda42dc7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD5 12835 bytes

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