These are almost certainly malware. Remember: a real font file has extensions like .ttf , .otf , or .fon . If you find a link to ms_shell_dlg_2.exe – .
This article explains what MS Shell Dlg 2 actually is, why you might be seeing "missing font" errors, and how to resolve them on Windows and Mac. What is MS Shell Dlg 2? Ms Shell Dlg 2 Font Free Download