Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc4ad2987d992c49…

MALICIOUS

PDF

184.7 KB Created: 2015-07-24 00:36:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 153e573d27c7a01ad26051bdb62cbc36 SHA-1: a6261f2c497de1bcb80d578258e5c92fc33a6e31 SHA-256: fc4ad2987d992c497358d786ab54dd79e87a4a1be4e4836cd6973d7bcd0ad380
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector suggests a downloader or initial access stage.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7699836-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7699836-0
  • 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%B5%D0%B3%D1%8D+%D0%BF%D0%BE+%D1%85%D0%B8%D0%BC%D0%B8%D0%B8+2015+401+%D0%B2%D0%B0%D1%80%D0%B8%D0%B0%D0%BD%D1%82+%D0%BF%D1%80%D0%BE%D0%B1%D0%BD%D1%8B%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185068_bogomolov_prakticheskie_zanyatiya_po_matematike_reshebnik.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184524_skachat_omsi_2_s_russkimi_avtobusami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184909_kak_podnyatsya_na_kruyshu_myeyz_tauyer_v_gta_5.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fcd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FCD 3556 bytes
font_01_sfnt_off00024d50.bin
9c1be486114286941f496a235736e366a2f96e480523382e66148947b8ef7c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D50 13952 bytes
font_02_sfnt_off0002795c.bin
44700e851a2a604af8630fa80f5887e4daa8aea9cc9cb202a277bd3b7200ea66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2795C 14708 bytes
font_03_sfnt_off0002a4d2.bin
37832a6026ed8a1c2f304eebf0bb9f70d7efc6c03a2b9d144f2a58850676648d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4D2 6936 bytes
font_04_sfnt_off0002b8df.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8DF 6084 bytes
font_05_sfnt_off0002c874.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C874 3752 bytes

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