Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dff214cf0a67f0b…

MALICIOUS

PDF

188.4 KB Created: 2015-07-23 20:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ca3824afa2cb412dd47bfd4eb9a6b915 SHA-1: 4637b6a29e83d1fa6f573c2ca2c42f0f7c1845a8 SHA-256: 6dff214cf0a67f0b16d87e81bf762fe550435e2e675aae57488680ff8d251ca2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is highly indicative of malware distribution or phishing. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded link suggest it's designed to lure the user to a malicious site.

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%B8%D0%B3%D1%80%D1%8B+%D0%BD%D0%B0+%D0%BF%D0%BB%D0%B0%D0%BD%D1%88%D0%B5%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+%D1%81+%D0%BC%D0%BE%D0%B4%D0%B0%D0%BC%D0%B8+095&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183253_nacionalnuyy_proekt_dostupnoe_i_komfortnoe_zhile.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184288_luchshie_boi_mayka_taysona_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183255_urok_informatiki_s_primeneniem_interaktivnoy_doski.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_off00024b6b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B6B 3556 bytes
font_01_sfnt_off000258ee.bin
ed1aa950d146a1fd2baf3351c4ee7aa77454498d3581da295bce1295b3cd0c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258EE 14428 bytes
font_02_sfnt_off00028687.bin
b8229cb2226cf93d94293d67fd290ed1ff642991f2b1cd44f15792ed1f779291		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28687 14700 bytes
font_03_sfnt_off0002b1d9.bin
1927778682cafd630be495f1ecc40d54b362eadbfb9b160863d8e6caeaa4dffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1D9 7452 bytes
font_04_sfnt_off0002c7aa.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7AA 6084 bytes
font_05_sfnt_off0002d73f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D73F 3752 bytes

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