/usr/share/java/doxia-module-confluence-1.1.4.jar is in libdoxia-java 1.1.4-1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/org/apache/maven/doxia/doxia-module-confluence/1.1.4/doxia-module-confluence-1.1.4.jar