Malicious PDF — malware analysis report

Static analysis result for SHA-256 3755824bf994f8cd…

MALICIOUS

PDF

45.6 KB
MD5: 4f111b0647d6f7d1fbaf74821fb27e7d SHA-1: 2ae8c904331cfd9d0813510967711710e1304e3a SHA-256: 3755824bf994f8cdab139208163dbdcd82e569ecd5a2f43ffaef0d7119dd39f5
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. While the document body is unreadable, the presence of JavaScript strongly suggests an attempt to execute malicious code, likely to download a secondary payload. The embedded URLs are not directly indicative of maliciousness 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
ffbad4250929f68937ad33c1cf7d78742e024ce7fd1fe9d0b9d29f3f0bbd0f63		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1ED 3962 bytes

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