Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a3329307b50bec…

MALICIOUS

PDF

44.9 KB
MD5: a68ec3fe173c65a006b93dbe50575d02 SHA-1: feb9dcf22a62e7f53e8b08550776a101780b0f7d SHA-256: b9a3329307b50bec14c5db58944c26ac25b8820bc039cb323bcc62d712cc4ade
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The presence of JavaScript suggests an attempt to execute malicious code, likely for downloading further payloads or exploiting vulnerabilities. While the specific JavaScript content is truncated, its presence and the ClamAV detection of 'Heuristics.PDF.ObfuscatedNameObject' strongly indicate malicious intent. The embedded URLs, though mostly benign or unknown, are included as potential indicators.

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
ddb921cde247d3256dcb98a2fe88725cca507c73155fb77818385d4dd6c70ccf		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1F7 3421 bytes

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