Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc900906c19754f…

MALICIOUS

PDF

187.2 KB Created: 2015-07-23 21:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 35358d7bc240dc8ea57394152004ef9c SHA-1: 445b1306253e8e160bd642e200eee91ce4187863 SHA-256: 4fc900906c19754fc4508fbce5386013dd3f4a4915d85455fc9698bf21578fd9
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to redirect users to a malicious site, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was truncated, but the presence of the malicious URL is sufficient evidence.

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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BE%D0%BC%D0%BF%D0%B0%D1%81+3d+v13+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BF%D0%BE%D0%BB%D0%BD%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D0%B0%D1%81%D0%BA%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184532_golaya_byanka_v_klipe_vesna_leto_bez_cenzuruy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183256_shema_podklyucheniya_gerkona.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184491_maykrosoft_ofis_2010_skachat_besplatno_russkaya_versiya_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246d3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246D3 3556 bytes
font_01_sfnt_off00025456.bin
1f3c41b6bfc0593d389c91504b5415c07e1bb4721a1711b919ed517dd4566f95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25456 14972 bytes
font_02_sfnt_off0002832c.bin
27053ea1e5d770064d90a6af439ac9d8fe1f4d42ccdeac34258802e6bdab73c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2832C 14516 bytes
font_03_sfnt_off0002ae0c.bin
ac5dc8bc96473a69e1b8b89a9243998b5ea4990fc6f114d850dfa0c7dd31a8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE0C 7172 bytes
font_04_sfnt_off0002c304.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C304 6084 bytes
font_05_sfnt_off0002d299.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D299 3752 bytes

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