Malicious PDF — malware analysis report

Static analysis result for SHA-256 403d08bed56e743f…

MALICIOUS

PDF

186.5 KB Created: 2015-08-03 11:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d8b83cdddb0aee9b0d9d3fbef648cbac SHA-1: 555729443ea7ea4b552684fc3f9747e7541ebde4 SHA-256: 403d08bed56e743f437820a7f7227306d4a64bda286419499f459ca182b46d2d
90 Risk Score

Malware Insights

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

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 malicious website.

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=%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D1%80%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0+%D1%81+%D0%BC%D0%B0%D1%88%D0%BA%D0%BE%D0%B2%D1%8B%D0%BC+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4280/4280631_kakuyu_proshivku_mozhno_postavit_na_iphone_3g.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204079_dnevnik_dzhona_vinchestera_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4276/4276415_kniga_fanfikov_registraciya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245d5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245D5 3556 bytes
font_01_sfnt_off00025358.bin
ebce2d79db16dfe1c04e1d48d96826ca27b56a0f520a5896be7105a7e84f97f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25358 14868 bytes
font_02_sfnt_off000281b7.bin
c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281B7 14520 bytes
font_03_sfnt_off0002ac89.bin
da34db4443b3ef37fc82a8cb892ece907c4541f92fb50217d7db45b00883b109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC89 6808 bytes
font_04_sfnt_off0002c02b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C02B 6084 bytes
font_05_sfnt_off0002cfc0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFC0 3752 bytes

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