Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ad3d25ed8bea14…

MALICIOUS

PDF

45.7 KB
MD5: 2f1066127a5aea0f9e985748bb0ad8bb SHA-1: 69035b5462dea936fad7c56afc33b1a05d6f249a SHA-256: b9ad3d25ed8bea14119378caa78b2955af60d1275177b06275f79a6df17e5a5b
84 Risk Score

Malware Insights

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

The PDF file triggered multiple heuristics related to JavaScript and obfuscation, including a critical ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject'. The presence of embedded JavaScript suggests an attempt to execute code upon opening the document. While the document body is unreadable, the combination of PDF structure, embedded JavaScript, and obfuscation points towards a malicious intent, likely for exploitation or payload delivery. The embedded URLs are not directly indicative of malicious activity but 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
dd6b957e331a4263eff96ea3dc22de7e602d6962b6daeb903092f16dade80a28		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1E2 4020 bytes

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