/usr/lib/libtcmalloc_and_profiler.so.4 is in libgoogle-perftools4 2.4-0ubuntu5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libtcmalloc_and_profiler.so.4.2.6
/usr/lib/libtcmalloc_and_profiler.so.4.2.6