/usr/lib/x86_64-linux-gnu/libtsk.so is in libtsk-dev 4.4.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libtsk.so.13.3.1
/usr/lib/x86_64-linux-gnu/libtsk.so.13.3.1