Malicious PDF — malware analysis report

Static analysis result for SHA-256 07bb559eae87eb69…

MALICIOUS

PDF

183.6 KB Created: 2015-08-03 15:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 6da75c188c22deb01e9afc268d2ad631 SHA-1: e2c01c8da42ba91965bd2a79d1eebd0d1f83c3e2 SHA-256: 07bb559eae87eb69642126159dcd0f7f4c42834d19e3b769f6411636da9edf22
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to lure the user to a potentially harmful site. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest malicious intent. The document's structure and metadata suggest it was generated by wkhtmltopdf, which can be used to create malicious PDFs.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%B2%D1%82%D0%BE%D0%BD%D0%B0%D0%B2%D0%BE%D0%B4%D0%BA%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%BA%D1%81+16&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203080_skachat_vzlomschik_igr_alavar_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4254/4254218_raspisanie_avtobusa_338_balashiha_zheleznodorozhnuyy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194490_kod_aktivacii_dlya_kasperskiy_internet_sekyuriti_2015.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_off00023dd8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DD8 3556 bytes
font_01_sfnt_off00024b5b.bin
9b7d955dd1508b6c9329b2d51701e55a1577015ff57a4e823ec53551c1ae9d14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B5B 13912 bytes
font_02_sfnt_off0002770a.bin
6ad92209ed666c1eba499cb9224221f2e0b6004fb74a3fe6c0b45da67ce7338f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2770A 14468 bytes
font_03_sfnt_off0002a1c0.bin
09750269890643c06b233032bc63b62f3c0ac0f22defe9dd932606778946b67b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1C0 6532 bytes
font_04_sfnt_off0002b46e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B46E 6084 bytes
font_05_sfnt_off0002c403.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C403 3752 bytes

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