Malicious PDF — malware analysis report

Static analysis result for SHA-256 362e5faa9b16b10f…

MALICIOUS

PDF

44.9 KB
MD5: b7627fe87ec448c3fc2ca7e7a170270f SHA-1: 8fdcf72af0ba93870cc535b4487e608d09ce82f3 SHA-256: 362e5faa9b16b10f215d75b4b2bef1da6a4092792811ded7524a8cba726059de
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further supports its malicious nature. While the document body is heavily obfuscated and unreadable, the presence of JavaScript suggests an attempt to execute arbitrary code, likely for downloading further payloads or redirecting the user. The embedded URLs are related to XFA forms, which can be exploited.

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
840b5e991d212ccd4189910eb3b3c0113179b70081572b294980c2dfdba70c7a		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1D8 3350 bytes

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