Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83c85535babb05f…

MALICIOUS

PDF

379.8 KB Created: 2015-11-07 14:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2020-07-02
MD5: 76fa6e6385e6ea5cd6e7203fec5904be SHA-1: d0d72692af987a2c34985f0de8dd52f767b0815e SHA-256: e83c85535babb05f3fe28e19aa381bbdd9c604c9cd7d04fb5bee60b9639d7c65
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://taurus-tg.ru/?nnr&keyword=%D0%B3%D0%B4%D0%B7+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B0%D0%B2%D1%83+10-11+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BD%D0%B8%D0%BA%D0%B8%D1%82%D0%B8%D0%BD+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8 PDF link annotation
    • http://media.nn.ru/data/ufiles/2015-11/8f/90/ac/563d8cb31969a_igruslrrsrusskimimashinami.pdfIn PDF document text
    • http://media.nn.ru/data/ufiles/2015-11/44/ee/16/563d98f0dba14_elektroskhemavaz21124sevropaneliu.pdfIn PDF document text
    • http://media.nn.ru/data/ufiles/2015-11/ac/9b/a8/563da9f738ea1_prezentatsiipomatematike2klassshkola2100tatuzova.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a9f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9F5 8032 bytes
SHA-256: 12525a476a3e4dff90167b7ddc0315c6d11f1ac8948bd01f10c65e1471d9c2a9
font_01_sfnt_off0005c1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E8 14252 bytes
SHA-256: 730bc75ba09c563f98c109e543fe482900a90e65d61e92ce3cfd9bc2bb18038d

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