Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb41211bc82a47b…

MALICIOUS

PDF

45.2 KB
MD5: 8bdf1c90158216d897dc8a9c47d3d05e SHA-1: 3be2675dae0fed61005cff22f4ddbe8e3e6f8fd6 SHA-256: 1bb41211bc82a47bfc722e2ee18dc6f5dda3661b838a68cf7b0725cc5b040429
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 heuristics. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject, suggesting malicious intent. The embedded JavaScript is likely responsible for executing malicious code or downloading further stages. The presence of XFA form elements (PDF_XFA) may be leveraged in conjunction with the JavaScript for exploitation. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure.

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
36d22bcc38ec0c253eacb7e3284faf57e3e224ac1259bb057f64ff233b0084cd		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1E5 3667 bytes

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