Malicious PDF — malware analysis report

Static analysis result for SHA-256 451429c30e1ad0b1…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 19:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e4632a4797814683cbbd2aebdc68dabb SHA-1: 4b132abcd7bad394707aa26288306ad2da8b2483 SHA-256: 451429c30e1ad0b17d88e417074456199e116f7756658c8a2d47f6b3c5045baa
92 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. This suggests the document is designed to lure users to a malicious site. No scripts were extracted, but the presence of a malicious URL is a strong indicator of a phishing or redirection attack. The ML classifier also strongly flagged this PDF as malicious.

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%B0%D0%B4%D0%BE%D0%BF%D1%82+%D1%84%D0%BB%D0%B5%D1%88+%D0%BF%D0%BB%D0%B5%D0%B5%D1%80+11+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189585_geroi_mecha_i_magii_3_dlya_android_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184415_chertezhi_samodelnuyh_shinnuyh_piloram.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184720_90011.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024452.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24452 3556 bytes
font_01_sfnt_off000251d5.bin
a5ecd959e2b96f8265118b682b9dbba676d4e407aa7340704e71f72bb1fefeba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251D5 14404 bytes
font_02_sfnt_off00027f1e.bin
c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F1E 14520 bytes
font_03_sfnt_off0002a9f0.bin
65f185472122108117da195e9434b3691fa85eac4435b32c7d5b04033a778e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F0 6924 bytes
font_04_sfnt_off0002be11.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE11 6084 bytes
font_05_sfnt_off0002cda6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDA6 3752 bytes

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