Malicious PDF — malware analysis report

Static analysis result for SHA-256 3308d0835c4a3fbb…

MALICIOUS

PDF

184.8 KB Created: 2015-07-24 19:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2021-01-23
MD5: b8fd86b657ad42186d0b5a611dfbbf13 SHA-1: 2f5a672a73a24c559d85f80e5a26337cd89cbed9 SHA-256: 3308d0835c4a3fbb3f3a1380b154e3f11277a546e563464b3680941213d265ed
132 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=microsoft+windows+minipe+edition+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188247_bazuy_dannuyh_bilayn_skachat.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188123_minecraft_110_skachat_torrent.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193250_gost_electro_for_visio_skachat.pdfIn PDF document text
    • http://www.microsoft.com/typography/fonts/YouIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a510.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A510 6984 bytes
SHA-256: cf30514f847fba96f17d0cf37d563ead54c2ca70bd5032aba787ae80f2ab92cd
font_00_sfnt_off00023d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23D14 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00024a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24A97 14952 bytes
SHA-256: f66477e5c19ae02da61bc5cb6d392c5672ed67c6e2f5cb7a6320d2ddff111b88
font_02_sfnt_off000278f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x278F8 14916 bytes
SHA-256: e63c86ae65dea15c46c13037d59e2d8f588976675f534bcb91425b5bfe980a58
font_04_sfnt_off0002b945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B945 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002c8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8DA 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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