Malicious PDF — malware analysis report

Static analysis result for SHA-256 203ceef090372ec8…

MALICIOUS

PDF

46.2 KB
MD5: 02329bc4ee8a48f7467c662b75c2b797 SHA-1: 0eec68571856f4ea8670e96189e266aeaa21a234 SHA-256: 203ceef090372ec85cb583a73fc94c55af7a968ad91aad025177c399fe9eb812
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristic firings. The 'CLAMAV_DETECTION' heuristic further suggests malicious intent due to obfuscated object names. While the document body is unreadable, the presence of JavaScript points to an attack pattern involving script execution, likely to download and execute a second-stage payload. The specific JavaScript content was too obfuscated to fully analyze, leading to a moderate confidence score.

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
91c1dd8224d876678c2dce9091a6ee329a7f93b69a32a11db97a5a861b4fa334		 pdf-javascript-stream PDF /JS object 12 at offset 0xA200 4455 bytes

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