Malicious PDF — malware analysis report

Static analysis result for SHA-256 248051601c15b25b…

MALICIOUS

PDF

358.3 KB Created: 2015-08-26 10:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9db7bd4e42315214fc9fb144ef8b486d SHA-1: d8976320b0e78b6b51da0cc4b0d54f6b53db475f SHA-256: 248051601c15b25bad9441d02239f056e55f1aebe6302c4bc5b6ca3daad7a2c9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is associated with this malicious activity. The document body, though heavily obfuscated, contains text related to 'Solidworks 2012' and 'wkhtmltopdf', suggesting a lure for software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://botcraftman.ru/?lip&keyword=solidworks+2012+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751660_evro__truk__simulyator_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751914_skachat__igru__worms_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752225_2_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055338.bin
9b29470c028e663bfa563168a9074ee03f23bef33de3c6f19f92a25dc1fd320d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55338 8552 bytes
font_01_sfnt_off00056bad.bin
34760cb5debbdad7abadbf93ae68f36cac0e6208dda2fee2d66ae7ba6309d738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56BAD 15020 bytes

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