Malicious PDF — malware analysis report

Static analysis result for SHA-256 760413f129db1db2…

MALICIOUS

PDF

359.3 KB Created: 2015-08-28 11:36:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cc312172d28ae18478546a68cef0383b SHA-1: 0cf12a59586a0359f9c926d7c78cced625bd5465 SHA-256: 760413f129db1db2253d07755f8279c3d963cf87a8f319cdda1b6ea4d1890452
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest the document is designed to lure users to a malicious site, likely for phishing or malware delivery.

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=%D1%81%D0%BA%D1%80%D0%B5%D0%B6%D0%B5%D1%82+%D0%BC%D0%B5%D1%82%D0%B0%D0%BB%D0%BB%D0%B0+%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+%D0%BD%D0%B0+pc&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802409_futazh__vuypiska__iz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802367_anketa__dlya__klienta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802470_dlya__yelektronnuyh__knig_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055bef.bin
1a8973589c7b38f001c2ec3696c810541d3bf25a39a9c46834a412c3ec97e575		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55BEF 8400 bytes
font_01_sfnt_off0005736f.bin
2455a8cc9f1df8ab90523d0908afae023be2521c37329db6dea4e9b98b053617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5736F 13652 bytes

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