Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2cfce5e66e86c3…

MALICIOUS

PDF

13.2 KB
MD5: 37bb1d612c36aa6adc8a7aee9bd77244 SHA-1: 515cf0381d951a57220be07d703c8b65065ab342 SHA-256: ee2cfce5e66e86c304f8e22ff41799501ce7de36eb9d28b58a07d90221f6635e
66 Risk Score

Malware Insights

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

The PDF contains embedded script content and is flagged by a machine learning classifier as malicious. The embedded script appears to be obfuscated JavaScript, likely intended to download and execute a second-stage payload. The presence of XFA form elements and embedded files further suggests a complex attack vector. While specific family attribution is not possible, the techniques indicate a downloader or exploit delivery mechanism.

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
c06033133d59440f1a2d3dc97e8ace35901d670099151f85c70c007ecb102b2f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD5 12713 bytes

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