Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf017ec4a84d0998…

MALICIOUS

PDF

387.4 KB Created: 2015-08-22 09:13:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b91a302461a62fa9cb2bf1ee5a128d3c SHA-1: 220a6686738cd575f501e17cb43783d97f0e60da SHA-256: cf017ec4a84d0998dfe24b5216877be56dee6d9c57ed45eb6beca559488ad13c
90 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 strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, but the presence of the malicious link suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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%D1%82%D0%B0%D0%BB%D0%BA%D0%B5%D1%80+%D0%B1%D0%BE%D0%BB%D1%8C%D1%88%D0%B0%D1%8F+%D0%B7%D0%BE%D0%BD%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+2015&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674548_skachat_igru_18_stalnuyh_koles_kubanskoe_razdole_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674488_skachat_igru_luntik_uchit_cifruy_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674527_vadim_panov_dikie_persuy_skachat_fb2.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005c7b5.bin
c748f6ce517424d2960f49f32a444d568dd7fbd7868df45347024fd1ddc13458		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B5 8340 bytes
font_01_sfnt_off0005e05c.bin
f774bb47fba05c79aadd3d9e0eeb4c32baf1d59753a1cd0b57691b8a6d83a1bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E05C 14252 bytes

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