/usr/lib/x86_64-linux-gnu/libftdi1.so is in libftdi1-dev 1.4-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libftdi1.so.2
/usr/lib/x86_64-linux-gnu/libftdi1.so.2