/usr/share/php/PHPMD/Rule/Design/ is in phpmd 2.3.2-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/PHPMD/Rule/Design/CouplingBetweenObjects.php
/usr/share/php/PHPMD/Rule/Design/DepthOfInheritance.php
/usr/share/php/PHPMD/Rule/Design/DevelopmentCodeFragment.php
/usr/share/php/PHPMD/Rule/Design/EvalExpression.php
/usr/share/php/PHPMD/Rule/Design/ExitExpression.php
/usr/share/php/PHPMD/Rule/Design/GotoStatement.php
/usr/share/php/PHPMD/Rule/Design/LongClass.php
/usr/share/php/PHPMD/Rule/Design/LongMethod.php
/usr/share/php/PHPMD/Rule/Design/LongParameterList.php
/usr/share/php/PHPMD/Rule/Design/NpathComplexity.php
/usr/share/php/PHPMD/Rule/Design/NumberOfChildren.php
/usr/share/php/PHPMD/Rule/Design/TooManyFields.php
/usr/share/php/PHPMD/Rule/Design/TooManyMethods.php
/usr/share/php/PHPMD/Rule/Design/TooManyPublicMethods.php
/usr/share/php/PHPMD/Rule/Design/WeightedMethodCount.php