/usr/share/maven-repo/com/google/i18n/phonenumbers/tools/cpp-build/1.x/cpp-build-1.x.jar is in libphonenumber7-java 7.1.0-5ubuntu5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/com/google/i18n/phonenumbers/tools/cpp-build/1.x/../../../../../../../../java/cpp-build.jar