Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e939804deb2310…

MALICIOUS

PDF

185.7 KB Created: 2015-08-08 09:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 03189d0f6fe29640832803d8081b00fe SHA-1: 817816e79641f818958474ebd7846cb500bf0dbe SHA-256: 97e939804deb23106357292d5bf4330e982126e047c67d28cc9802e3ac32f5d4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirector activity. No scripts were extracted, but the primary malicious function appears to be directing users to a potentially harmful external site.

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=%D0%B2%D1%87%D0%B5%D1%80%D0%B0%D1%88%D0%BD%D0%B8%D0%B9+%D0%B1%D0%BE%D0%B9+%D0%BD%D0%B0+%D0%BA%D0%B0%D0%BD%D0%B0%D0%BB%D0%B5+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D1%8F+2+%D0%B2+2100&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384175_video_stuyd_porka_vospitanie.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384428_korkonosenko_osnovuy_zhurnalistiki_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383981_skachat_chituy_dlya_css_v80.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241ec.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241EC 3556 bytes
font_01_sfnt_off00024f6f.bin
28323e30bb5ab6d13c4d28a2e4a1179a0aae73a157f6345e4cda3b2283ee26c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F6F 14824 bytes
font_02_sfnt_off00027dfb.bin
392dba668ceacb81b166dc414e22dc380d46216b2b4f411e898bbc1c503e4862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DFB 14740 bytes
font_03_sfnt_off0002a8e9.bin
3e9a0bca9c65ff5878be074b7ffb63a0ac8af914e8c0571f920aaca31d2773f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8E9 6984 bytes
font_04_sfnt_off0002bd0c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD0C 6084 bytes
font_05_sfnt_off0002cca1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCA1 3752 bytes

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