Malicious PDF — malware analysis report

Static analysis result for SHA-256 69811a93487ef4a8…

MALICIOUS

PDF

184.9 KB Created: 2015-08-05 13:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 677676c8332d7f3a82c4be7365c7344f SHA-1: 34f1c7550af90e0b59682d25224e36409dcdd66d SHA-256: 69811a93487ef4a85425704dab04532270f8b3a5ae1169ccef92ff201bcc51c6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is disguised as a download for Windows 8 Pro. This indicates a phishing attempt to lure users to a malicious site. No scripts were extracted, but the presence of a malicious URL and the ML classifier's high confidence score support this assessment.

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=windows+8+pro+%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//4304/4304451_bangkok_hilton_skachat_torrent_v_horoshem_kachestve.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304446_mikimaus_onlayn_smotret_besplatno_vse_serii_podryad_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304449_kamasutra_polnaya_versiya.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a59a.bin
e499234f7d865469e8c028a1bb6bfb67cebe4d553d32c222f3f366df0e2bafa8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A59A 7052 bytes
font_00_sfnt_off000240a7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240A7 3556 bytes
font_01_sfnt_off00024e2a.bin
1b31899f047991c5f414b7ec089fb15c8cba1d2e5206a1d53f4f4fa3c4bb1e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E2A 14144 bytes
font_02_sfnt_off00027aad.bin
90fec2321e8e87820209370dd73a500e92ad24d312d865e10e85e2f053b2ed1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AAD 14536 bytes
font_04_sfnt_off0002b9f8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9F8 6084 bytes
font_05_sfnt_off0002c98d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C98D 3752 bytes

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