Malicious PDF — malware analysis report

Static analysis result for SHA-256 3430cc51d581363a…

MALICIOUS

PDF

378.6 KB Created: 2015-08-24 02:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2026-06-05
MD5: 0ce667770c0f3f38d15b5c158b1a357d SHA-1: d306882fc251e2d0e23ada444acdde69c25523d9 SHA-256: 3430cc51d581363a2f8caf5b64a10784b5485f3bf2cfd31719d126833a885f67
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to a known malicious domain, botcraftman.ru. The heuristics indicate this is likely an SEO-based redirector used for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, and the ML classifier strongly flagged it as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 3

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=%D0%BF%D1%80%D0%B8%D0%BA%D0%B0%D0%B7+%D0%BE+%D0%BF%D0%B5%D1%80%D0%B5%D0%BD%D0%BE%D1%81%D0%B5+%D0%BE%D1%82%D0%BF%D1%83%D1%81%D0%BA%D0%B0+%D0%B2+%D1%81%D0%B2%D1%8F%D0%B7%D0%B8+%D1%81+%D0%B1%D0%BE%D0%BB%D1%8C%D0%BD%D0%B8%D1%87%D0%BD%D1%8B%D0%BC+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8 In PDF document text
    • http://botcraftman.ru/?lip&keyword=%D0%BF%D1%80%D0%B8%D0%BA%D0%B0%D0%B7+%D0%BE+%D0%BF%D0%B5%D1%80%D0%B5%D0%BD%D0%BE%D1%81%D0%B5+%D0%BE%D1%82%D0%BF%D1%83%D1%81%D0%BA%D0%B0+%D0%B2+%D1%81%D0%B2%D1%8F%D0%B7%D0%B8+%D1%81+%D0%B1%D0%BE%D0%BB%D1%8C%D0%BD%D0%B8%D1%87%D0%BD%D1%8B%D0%BC+%D0%BE%D0%B1%D1%80%D0%BIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694925_konspekt__uroka__rannie_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695918_windows__xp__tablet_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694614_programma__dlya__razdachi_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A171 8716 bytes
SHA-256: 4eb334a92be105b38f117ae80ec28555b954d330f6ee44337417d1605d75b5f4
font_01_sfnt_off0005ba81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA81 15984 bytes
SHA-256: 3553ce70a655eab552b9f07d47b23175a8c1024f67807708a0f02eb147d4c56e

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