Malicious PDF — malware analysis report

Static analysis result for SHA-256 6537f4095d1c2f92…

MALICIOUS

PDF

184.9 KB Created: 2015-07-24 23:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ced8eec2431cf4358569e4110fd6c7ce SHA-1: c6872a2a2153c01cd75ce611f4a2c987a43b3805 SHA-256: 6537f4095d1c2f92f3d7e69e48b13d10bed6766f90485163c5ccea30f0910fca
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector, suggesting the document's purpose is to lure users to a harmful site. The ClamAV detection name 'Pdf.Dropper.Agent-7493207-0' further supports its role as a dropper.

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.
  • ClamAV: Pdf.Dropper.Agent-7493207-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493207-0
  • 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%9A%D0%B8%D0%B0+%D0%BF%D1%80%D0%B5%D0%B4%D0%B6%D0%B8%D0%BE+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185559_geroi_3_vozrozhdenie_yerafii_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184295_skachat_mp_flooder.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186142_klyuchi_dlya_trikolor_tv.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241af.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241AF 3556 bytes
font_01_sfnt_off00024f32.bin
b11c62d86e4e5c03f862ba414a64b574fa33cfd91ba1b14e56b104c9374e394b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F32 14216 bytes
font_02_sfnt_off00027c36.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C36 14468 bytes
font_03_sfnt_off0002a6e5.bin
ff636f84f5f865c779fbe68256f13f6a8f093f2beddc1524e6b9221ed2ada0dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6E5 6660 bytes
font_04_sfnt_off0002b9df.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9DF 6084 bytes
font_05_sfnt_off0002c974.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C974 3752 bytes

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