Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca67fcbd715390ad…

MALICIOUS

PDF

2.7 KB
MD5: 98216951c12dc6ab3b5d8c6c57a2a69e SHA-1: cd251e2381b504c7261e7fcfbe2444ced0daf3c1 SHA-256: ca67fcbd715390ad0dd4bf659cca3eb534e0ac8e71e48965161f84e66dbe6eac
102 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious JavaScript

The PDF contains embedded JavaScript and RichMedia (Flash) content, strongly indicating an attempt to exploit vulnerabilities. The ML classifier also flagged this PDF as malicious with high confidence. The presence of the 'javascript_obj0006_000.js' embedded file suggests the script is intended to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
307fb845cf71d2f5063467c9e70773d51edb84986aff9bd2cade64014ba2848b		 pdf-javascript-stream PDF /JS object 6 at offset 0x106 1561 bytes

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