Malicious PDF — malware analysis report

Static analysis result for SHA-256 185af83c0e866b64…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 09:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0afdf0baa47d9cbf8e03559a7a21831d SHA-1: 07e6f6a2a0182b853df829d37bf04282916081ba SHA-256: 185af83c0e866b643302de02b9c194ac5dd30be49fff16d94e70440219ec6cf6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of a potential phishing or malware distribution attempt.

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%BC%D0%BE%D0%BD%D0%B8%D1%82%D0%BE%D1%80%D0%B8%D0%BD%D0%B3+%D0%BF%D0%BE+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC%D1%83+5+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384024_dnevnik_marluy_chitat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383701_podpolnaya_imperiya_skachat_torrent_1_sezon.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383966_tekstovuyy_redaktor_dlya_nokia_5800.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_off000244b1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244B1 3556 bytes
font_01_sfnt_off00025234.bin
dd6f03dce51a7e95034e094b19ed917fe3fea58eb6376b6b842cd429da787b9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25234 15096 bytes
font_02_sfnt_off000280c8.bin
734a0e3b4f833bf65ef9aa9a76728ab53f12e51cd926d3a6291e3b266682b037		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280C8 14640 bytes
font_03_sfnt_off0002abfb.bin
af97017dba0c3049e0f110bbd9a6588b0a91260c7ef9d63ec406c0f594d5c293		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABFB 6764 bytes
font_04_sfnt_off0002bf7b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF7B 6084 bytes
font_05_sfnt_off0002cf10.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF10 3752 bytes

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