Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8971c3a485889a…

MALICIOUS

PDF

412.7 KB
MD5: 86ed71604572e30e4f93f92c00f58e95 SHA-1: c1ae075f76bc5116e7346bec682088e60abe092c SHA-256: 9e8971c3a485889a585a5ae602291a5ad3745d44e8c77fd8b9f092651c63b389
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file exhibits significant obfuscation and contains embedded JavaScript, as indicated by multiple heuristic firings including ClamAV's detection of 'Heuristics.PDF.ObfuscatedNameObject'. The embedded JavaScript stream is likely designed to download and execute a second-stage payload. While the specific family is not identifiable, the techniques suggest a malicious document designed for initial compromise.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • 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_obj0012_000.js
dee17595e76b7d8c18e2c7d5fe19da1b7fc07174ec72d3b65050172e56eb7eec		 pdf-javascript-stream PDF /JS object 12 at offset 0x6668A 6262 bytes

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