Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a1f9ea1bcff7bd…

MALICIOUS

PDF

186.5 KB Created: 2015-07-25 09:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e3278a377a5b95b09533b0b3ceffd8cb SHA-1: 3bbd7b80c5fc2ce0872e272501d2595cccfb2711 SHA-256: 09a1f9ea1bcff7bd8d1faecd35219ec821faf12f994db8fecd802f3c63a01ea0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a malicious intent.

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%B3%D1%82%D0%B0+5+%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+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%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//4197/4197922_3ds_max_2015_skachat_torrent_x32.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185015_licenzionnuyy_klyuch_vkduty_pro.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185582_chertezhi_blochnogo_luka.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_off0002470c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2470C 3556 bytes
font_01_sfnt_off0002548f.bin
035eef9d726ddbe38fd4c719f29035ee19d139a1d33f7c08665e249e11fb1407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2548F 14640 bytes
font_02_sfnt_off000281b4.bin
c0042c06f7a9be3b9f2543bd5a8a3cb3c03c3edc049f9bad08f7be1153f0316a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281B4 14640 bytes
font_03_sfnt_off0002ace4.bin
a8c7e242ebc5892e077cf7c210166ab87733d328e7eec73d5d5fbd6fc69ae672		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACE4 6708 bytes
font_04_sfnt_off0002c01c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C01C 6084 bytes
font_05_sfnt_off0002cfb1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFB1 3752 bytes

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