/usr/lib/x86_64-linux-gnu/libsfml-window.so.2.4 is in libsfml-window2.4 2.4.1+dfsg-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsfml-window.so.2.4.1
/usr/lib/x86_64-linux-gnu/libsfml-window.so.2.4.1