/usr/lib/x86_64-linux-gnu/libclang.so.1 is in libclang1-3.5 1:3.5.2-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libclang-3.5.so.1
/usr/lib/x86_64-linux-gnu/libclang-3.5.so.1