Malicious PDF — malware analysis report

Static analysis result for SHA-256 965bde0e5bc739d1…

MALICIOUS

PDF

341.9 KB Created: 2015-08-21 09:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e28b624c10687d16b8e0982ff1f273cb SHA-1: cc0d66373410095e30b909ccc7649b27b0542267 SHA-256: 965bde0e5bc739d1451665e29d0a1c94b9cf15e7952c019ea11842ee8ad87c0d
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is likely used to redirect users to a malicious site. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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+word+%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&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654818_svezhie_klyuchi_nod_32_na_90_dney.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654804_skachat_chit_na_vormiks_na_otmenu_boya_matrica.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654772_rsplayer_v14_skachat_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050acb.bin
61a2988ad11a8d3cc12304dfbe28c54a04e79daa9c3fa9cad4c4e6dd2a8591b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50ACB 9592 bytes
font_01_sfnt_off00052527.bin
4015b6e65377ddb38ed2d3bb6adeb7b3d285a86db9acf7cb3da288214cc82289		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52527 17088 bytes

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