Malicious PDF — malware analysis report

Static analysis result for SHA-256 61bf8f4940de3453…

MALICIOUS

PDF

186.4 KB Created: 2015-07-27 09:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cdb059c9f4c3cf2059717e3ef989c1b1 SHA-1: a48fc857a49e9c8be1f6d7c017f2f1fd574a445b SHA-256: 61bf8f4940de34539653ca750732987f7a7f41b59e06906244038162a28badd1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated 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 users 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=%D0%95%D0%BB%D0%B5%D0%BD%D0%B0+%D0%B7%D0%B2%D0%B5%D0%B7%D0%B4%D0%BD%D0%B0%D1%8F+%D0%BF%D1%80%D0%B8%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2%D0%B5%D0%B4%D1%8C%D0%BC%D0%BE%D1%87%D0%BA%D0%B8+2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4221/4221471_programma_dlya_nastroyki_sabvufera_na_kompyutere.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4220/4220679_marla_silli_shkola_flayledi_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191831_taymer_dlya_spidkubinga_skachat.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_off000245eb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245EB 3556 bytes
font_01_sfnt_off0002536e.bin
a3362ba2734815958ced9d34578b2a92e18a9b8a428d9357baf557c4b1cc179f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2536E 14572 bytes
font_02_sfnt_off00028121.bin
933658d104a16944edb77c149108c6d8499a62bce991f645ed9a04630d704794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28121 14468 bytes
font_03_sfnt_off0002abd3.bin
2000e843c45903201934fca0dda0531c7e57172f4784cb0987b57ccdbd88b962		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABD3 6924 bytes
font_04_sfnt_off0002bfd0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFD0 6084 bytes
font_05_sfnt_off0002cf65.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF65 3752 bytes

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