Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d830fd9571f5410…

MALICIOUS

PDF

349.7 KB Created: 2015-08-21 09:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b2a649a407fc101f499b064274c247a9 SHA-1: 7281efde9b28c986144e04ee6c5404aea9422b3d SHA-256: 6d830fd9571f5410a8dd34875a4203ba55eb820b3afebc28f1b4e1731d68898f
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 a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the embedded URL is sufficient to classify this as a malicious redirector used for phishing or malware delivery.

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=%D1%83%D0%B4608+%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D0%B2%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654683_gippenreyter_skachat_samaya_vazhnaya_kniga_dlya_roditeley.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654675_dnevniki_vampira_10_kniga_ohotniki_obretaya_sudbu_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654684_kogda_budut_izvestnuy_rezultatuy_egye_po_himii_2015.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005309f.bin
d1ba3b5d0916e018a10ab89c3410019cee36886e72303e902c5cf327fd4ccbbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5309F 9708 bytes
font_01_sfnt_off00054c19.bin
f6bd893abbd40acb2ffd3f5953dde909a24c44ee2d7c8260fb6d7bb581016087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C19 13436 bytes

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