Malicious PDF — malware analysis report

Static analysis result for SHA-256 033545f315607b77…

MALICIOUS

PDF

185.8 KB Created: 2015-08-08 11:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3eca444a48243de0e78591d610edd086 SHA-1: f5b166855d3826384b17e7d9797f5cbb919c147e SHA-256: 033545f315607b77eb89e12804247acd1e8598dc38dfcdd608154ad7e1f97520
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including a critical finding for a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector, suggesting the document's primary purpose is to lure users to a compromised site.

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-8799274-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8799274-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+aim+cfg+%D0%B4%D0%BB%D1%8F+cs+16&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384043_ilnur_musin_pesni_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386345_liberta_albano_i_ramina_pauyer_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388446_uzbekcha_kushiklar_mp3.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_off0002a714.bin
05e33cb55e9e0a09250c8552e8eca156bc0151dd8899d7bc344692f5f01c7123		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A714 7604 bytes
font_00_sfnt_off000240d8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240D8 3556 bytes
font_01_sfnt_off00024e5b.bin
eff12cec1aa5b20263e699e41faed43b940fc949ec5e28278554ed8a530c7325		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E5B 14600 bytes
font_02_sfnt_off00027b98.bin
a25973ac940ddc872a3b8a9147989bee1eaedb4683c72cb3feed1b0b4d3e93e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B98 14732 bytes
font_04_sfnt_off0002bd70.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD70 6084 bytes
font_05_sfnt_off0002cd05.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD05 3752 bytes

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