Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cead15910dab0cf…

MALICIOUS

PDF

45.7 KB
MD5: 773afedc7348519b2a6f785457f095fd SHA-1: 68b3c6fbf29f3d741ccfb1ebf3da8a33f6bdc180 SHA-256: 4cead15910dab0cfb5c0f81fe67d2c3209a596dbbb4923c3e0d415ae5d1b7883
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file exhibits characteristics of malicious intent, including embedded JavaScript and XFA form elements, which are often used to deliver exploits or obfuscated code. The ClamAV heuristic 'Heuristics.PDF.ObfuscatedNameObject' strongly suggests malicious activity. While the document body is unreadable, the presence of JavaScript points towards an attack pattern involving code execution. The embedded JavaScript stream, though not fully analyzed due to potential obfuscation, is the primary mechanism for the malicious payload delivery.

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
e257ad0c21dffae3ac7d1ee0a2b68a3ebd7e5bd5e2a1b90c8293823793fe78e7		 pdf-javascript-stream PDF /JS object 12 at offset 0xA205 4251 bytes

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