Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb30ae50e8f9cc9…

MALICIOUS

PDF

184.5 KB Created: 2015-07-23 20:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 960e8676c2150bbaa6fa9ac9ab8c7cd3 SHA-1: 6f0a8443a236f8704c8d1c2c674a76f62c650d08 SHA-256: 4cb30ae50e8f9cc9da87940fa3fa1938c554d26ec8b437cc709a84338f75fc7d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. No scripts were extracted, and the document body was heavily truncated, making it difficult to determine the exact lure or further payload delivery mechanism. The ClamAV detection also confirms the malicious nature of the file.

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-8786903-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786903-0
  • 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=multimedia+fusion+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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183092_lebedi_shema_vuyshivki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184363_obuchayuschie_multfilmuy_dlya_detey_34_let_skachat_s_torrenta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183256_shema_podklyucheniya_gerkona.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2a6.bin
4a0843254db4dda2b7e417dd3dbaeb245692db9d76d14834fbb9c66e860532f4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2A6 7368 bytes
font_00_sfnt_off00023c69.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C69 3556 bytes
font_01_sfnt_off000249ec.bin
748a785f47fb4e700fdca8075e91c4deece680130c16b6324a64bd0f4a3578e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249EC 14472 bytes
font_02_sfnt_off000276cb.bin
a4c65252f6596216f75312087cdc59923975a86d8098f182c539d34edb26a91a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276CB 14840 bytes
font_04_sfnt_off0002b843.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B843 6084 bytes
font_05_sfnt_off0002c7d8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7D8 3752 bytes

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