/usr/lib/x86_64-linux-gnu/libncursesada.so is in libncursesada4-dev 6.0.20150808-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libncursesada.so.4
/usr/lib/x86_64-linux-gnu/libncursesada.so.4