Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12924a1cebb6289…

MALICIOUS

PDF

185.8 KB Created: 2015-07-23 20:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a676afce18ee39426b19f1fe0824fcd8 SHA-1: 6428f4f8a8b4ece6ad6833e28988b6de1f61b902 SHA-256: a12924a1cebb62891538a6a3af1857b2b66dbf604db9bcb89d7d906d9169d0c7
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 assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download page. No scripts were extracted from this sample.

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=%D1%87%D0%B0%D0%BA+%D0%BF%D0%B0%D0%BB%D0%B0%D0%BD%D0%B8%D0%BA+%D1%83%D1%86%D0%B5%D0%BB%D0%B5%D0%B2%D1%88%D0%B8%D0%B9+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184400_kallanetika_s_ekaterinoy_ruykovoy_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183260_shema_ponizhayuschego_transformatora.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184383_biletuy_na_pogruzchik.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024146.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24146 3556 bytes
font_01_sfnt_off00024ec9.bin
9970e2d39e07bd440e5230b5ce532c75cb98a7357082f6773ea4f0c848b37278		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EC9 15088 bytes
font_02_sfnt_off00027de2.bin
3567ceed3650f93b4fe189e1ca9af82245f681a6986d2dabbf06d219479150dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DE2 14868 bytes
font_03_sfnt_off0002a9cb.bin
893a2ee07eaa401ca7b3b79995234a663571b8630bc16d08d71f018df7205c12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9CB 6776 bytes
font_04_sfnt_off0002bd3f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD3F 6084 bytes
font_05_sfnt_off0002ccd4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCD4 3752 bytes

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