Malicious PDF — malware analysis report

Static analysis result for SHA-256 3226f94bbf39a720…

MALICIOUS

PDF

13.2 KB
MD5: dd48058ed907fd439f3039fcbd5be784 SHA-1: 42eade75a610c861ad70f78feb952d14e3a361e2 SHA-256: 3226f94bbf39a720eed8b2be9ea8ee631e68060dd5f51c18c0c212840c7d2ee3
66 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF contains an embedded script payload and is flagged by an ML classifier as malicious. The embedded script appears to be obfuscated JavaScript, likely intended to download and execute a second-stage payload. The presence of an embedded file further supports the malicious intent.

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
3f46bdace700e1495759307601af794f4685a7aed9206fd4c8be069e7645a340		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD5 12802 bytes

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