Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1304058770ddd2…

MALICIOUS

PDF

365.8 KB Created: 2015-08-24 00:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 30f42a73300957c70f613c6d6cdbd94c SHA-1: 4dbba8eb78a45100660abc99e5b6dff34e0be984 SHA-256: 6f1304058770ddd292e11365d13648cccc20164635010386797262a414ce2f38
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to deliver a second-stage payload. The ML classifier also flagged this PDF with high confidence. The document body text, though heavily obfuscated, suggests a lure related to software downloads for Windows 7.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=microsoft+office+2015+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B4%D0%BB%D1%8F+windows+7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693495_yeroticheskie__igruy__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694186_perevodchik__gugl__so_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693176_skachat__opera__mini_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000567ea.bin
78a23eee6327bfd103abfd5f014799af942705f25abd4927143349af4d9e6b53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567EA 10184 bytes
font_01_sfnt_off0005852d.bin
319b85056a7ef90a0564f03a65e28494f31518c402892e0a3579b1f7dd4e678f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5852D 16400 bytes

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