Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb260cb3ce43496…

MALICIOUS

PDF

185.5 KB Created: 2015-08-05 13:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c3990b5db394efdae61102746edd1f58 SHA-1: fc0739744f96e9f18b7a5daf94c7462a7b71d6eb SHA-256: 3eb260cb3ce43496b1c3faca9acabca644ec8cc2aba036fa803913808f44b384
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 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 redirect users to a harmful 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=%D1%81%D1%82%D0%B0%D0%BB%D0%BA%D0%B5%D1%80+%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%BC%D0%B5%D1%85%D0%B0%D0%BD%D0%B8%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304468_skachat_uralskie_pelmeni_ochen_strashnoe_smeshno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304431_payday_2_skachat_torrent_na_russkom_ot_mehanikov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304434_uzoruy_kryuchkom_dlya_tolstoy_pryazhi_so_shemami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024336.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24336 3556 bytes
font_01_sfnt_off000250b9.bin
e10fda1292a466ff7227c8029ac20f6c9fbc7c6fbdfeae951cb426d37de1b203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250B9 15108 bytes
font_02_sfnt_off00027f0e.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F0E 14532 bytes
font_03_sfnt_off0002a9fe.bin
964e9ae8d440e54cff2938b017fbb190b5db33b01b51bdd7d0b57284b63130a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9FE 6452 bytes
font_04_sfnt_off0002bc62.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC62 6084 bytes
font_05_sfnt_off0002cbf7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBF7 3752 bytes

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