Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cff457f0e0a0e5…

MALICIOUS

PDF

185.9 KB Created: 2015-07-27 04:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 076571785d5a0ec42e961e4a38934441 SHA-1: 07a2c1ed4d3411cd7052e964830779a128c036e1 SHA-256: 34cff457f0e0a0e593404fb9853be141c334a4a548c99c96af810c2fdb6c098a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external 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=warcraft+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4212/4212273_skachat_yeroticheskiy_kontent_dlya_sims_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203397_mazda_6_rukovodstvo_po_remontu_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198836_139qmb_manual_russkiy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024383.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24383 3556 bytes
font_01_sfnt_off00025106.bin
061ff302a4d9ddaf39fdf391297376009e8f9023005d50d950cdf52f80e039e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25106 14672 bytes
font_02_sfnt_off00027e93.bin
68df2012707de94b36e4c2e9c7f246712ef3587d38d8fc1583781935b503eb41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E93 14676 bytes
font_03_sfnt_off0002a9f4.bin
e958ac1dd70ca5c98ad35ec92e217b674841f43a2d728b321415d32ea6853d0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F4 6852 bytes
font_04_sfnt_off0002bdda.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDDA 6084 bytes
font_05_sfnt_off0002cd6f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD6F 3752 bytes

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