Malicious PDF — malware analysis report

Static analysis result for SHA-256 8897f6c7d07e552d…

MALICIOUS

PDF

28.0 KB
MD5: e4dec6d558d674eadb28da79034514ee SHA-1: 4e2c6c8e864336b53dd95d3f4713a93c232929fb SHA-256: 8897f6c7d07e552d0b2ad32b96c95db7d710b648f6a677372376d48223cc9c77
88 Risk Score

Malware Insights

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

The PDF exhibits multiple indicators of malicious intent, including embedded files and scripts, and is flagged with high confidence by an ML classifier. The presence of XFA form elements and PRC/3D content suggests an attempt to leverage specific PDF features for exploitation or payload delivery. While no specific script content was detailed, the embedded script payload heuristic indicates a likely attempt to execute malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0002.bin
0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0xCA 46 bytes
embedded_file_obj0008.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x153 228 bytes
embedded_file_obj0001.bin
a3d455fa10fc4bb6b3ae3bbf5ce34329eff6ee39306a7c2805dffd3424e28363		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x529 26801 bytes

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