Malicious PDF — malware analysis report

Static analysis result for SHA-256 7937d32c254c240b…

MALICIOUS

PDF

187.1 KB Created: 2015-07-26 04:07:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e8790ab24cf8d56e2e2a924c120752e5 SHA-1: d201b929d2357ba789a45830bbadbc5b0e670d56 SHA-256: 7937d32c254c240b110173f59ba2074f8735b0344ce75fb9af3960f8b8e2e81e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is disguised as a game download link. This indicates a phishing or social engineering attempt to direct the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=guild+wars+2+%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+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193925_klyuch_bazis_mebelschik_8.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200738_skachat_farming_simulyator_2015_s_modami_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4212/4212238_programma_dlya_ochistki_kompyutera_ot_musora_skachat_besplatno.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002acd3.bin
80240a6c7029293d2c9cdd7cad9ab1e89c8ad009c3b7201b9c3bea64d7281abe		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ACD3 7356 bytes
font_00_sfnt_off00024487.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24487 3556 bytes
font_01_sfnt_off0002520a.bin
b759bdad728f99898db0d0e319672d04b1a1f2c6fc603e6f0286f9558c744b7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2520A 15364 bytes
font_02_sfnt_off00028168.bin
7a3a7a6783a118a632271b6ada1667f652b2a34612d338f924e53ba5160fc45b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28168 14688 bytes
font_04_sfnt_off0002c277.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C277 6084 bytes
font_05_sfnt_off0002d20c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D20C 3752 bytes

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