Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0d35e333a2d6e8…

MALICIOUS

PDF

387.1 KB Created: 2015-08-22 09:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0745d05c9109f2396109cf24a59cfe1f SHA-1: e5cde2537c4824bdf5bee5db9506c325c7661c43 SHA-256: de0d35e333a2d6e892405fac0ca3e2c305587850e7a7a0ca7c42bb77beea5525
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/. This indicates the document is designed to lure users to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=serious+sam+3+%D0%B1%D0%B0%D0%B3+%D1%81+%D0%BA%D1%80%D1%83%D1%82%D1%8F%D1%89%D0%B5%D0%B9%D1%81%D1%8F+%D0%BA%D0%B0%D0%BC%D0%B5%D1%80%D0%BE%D0%B9&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674525_apachiiskyhair_v_1_5_full_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674478_dzhon_grin_bumazhnuye_goroda_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674487_bonus_kod_world_of_tanks_2015_na_noyabr.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005bb9e.bin
eee03badac807e082bdd2f34a4d92e9163217d008018a4af4d2e3505413ed42b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB9E 10328 bytes
font_01_sfnt_off0005d884.bin
b1c8b8e3097ca772548b1ab0f9bc9d54299586f1dc6825458df2eca47a8c9301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D884 17648 bytes

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