Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a635df78be05eb…

MALICIOUS

PDF

185.9 KB Created: 2015-07-24 11:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b9e1f7bab40c74c7baf86d0ba03a3a7b SHA-1: fd97f833f3f99ee457d3b82c690cbc96edaa2c7f SHA-256: 09a635df78be05eb95645abd8e6686100635b44a32fc0b10808933ae605e844c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, 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 embedded URL is the primary indicator of 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%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BD%D0%B0+%D0%B3%D0%B8%D0%B0+2015+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+4+%D0%B8%D1%8E%D0%BD%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189808_licenzionnuyy_klyuch_dlya_navitel_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183203_kursovoy_proekt_torgovuyy_centr.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185209_karina_zhuraeva_3_dnya_i_tuy_v_turizme_skachat_besplatno.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_off00024230.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24230 3556 bytes
font_01_sfnt_off00024fb3.bin
501215eeb54b43fc9b65a6aba1b4e478b9d2afc86a1653b1f350a38d78766216		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FB3 14516 bytes
font_02_sfnt_off00027d3d.bin
77cd80dbc09e6d758a6639e72420f1cf6e0cd5ee8a13191e9e0942d23908909f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D3D 14640 bytes
font_03_sfnt_off0002a871.bin
69c0b4ba7e56d8059de2d788d509b05970a554e738f5e96e9590f35eb55bfdf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A871 7328 bytes
font_04_sfnt_off0002bdf6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDF6 6084 bytes
font_05_sfnt_off0002cd8b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD8B 3752 bytes

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