Malicious PDF — malware analysis report

Static analysis result for SHA-256 71550c4bb36ebf34…

MALICIOUS

PDF

187.3 KB Created: 2015-07-24 20:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c829994d2f5c0e69542eb37e00b71521 SHA-1: 50884ade0ab8e43d378fd5c8eb56b34f88057559 SHA-256: 71550c4bb36ebf343cb2a0655110305ec483821e2ecf46a6fbbd158cf7004d64
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely serves as a lure to a malicious site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%80%D0%B5%D0%B7%D1%83%D0%BB%D1%8C%D1%82%D0%B0%D1%82%D1%8B+%D0%B5%D0%B3%D1%8D+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+2015+%D0%B1%D0%B5%D0%BB%D0%B3%D0%BE%D1%80%D0%BE%D0%B4%D1%81%D0%BA%D0%B0%D1%8F+%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190150_vkontrole_message_versii_10.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184852_skachat_kompas_3d_v13_besplatno_polnaya_versiya_askon.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194102_skachat_igru_gta_vice_city_sdelano_v_sssr_cherez_torrent.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_off0002473d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2473D 3556 bytes
font_01_sfnt_off000254c0.bin
dc1b838cd54d9a8ac01ceb626fb6ab336b02ff6717d03f5be0423ea1c36ca794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254C0 14736 bytes
font_02_sfnt_off00028260.bin
d129b2306b70ce91da7e21aa5dc95ff0e57120c5b3b157257a57119c7bcd55f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28260 14640 bytes
font_03_sfnt_off0002ad99.bin
40179beb0b73b2244860129856c3ad5b3d5cde754a1b0b3957825fe61bae3829		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD99 7396 bytes
font_04_sfnt_off0002c362.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C362 6084 bytes
font_05_sfnt_off0002d2f7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2F7 3752 bytes

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