/usr/share/ is in php-mail-mimedecode 1.5.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/
/usr/share/php/.registry/
/usr/share/php/.registry/.channel.doc.php.net/
/usr/share/php/.registry/mail_mimedecode.reg
/usr/share/php/tests/
/usr/share/php/tests/Mail_mimeDecode/
/usr/share/php/Mail/
/usr/share/php/Mail/mimeDecode.php
/usr/share/doc/
/usr/share/doc/php-mail-mimedecode/
/usr/share/doc/php-mail-mimedecode/package.xml
/usr/share/doc/php-mail-mimedecode/tests/
/usr/share/doc/php-mail-mimedecode/tests/parse_header_value.phpt
/usr/share/doc/php-mail-mimedecode/tests/semicolon_content_type_bug1724.phpt
/usr/share/doc/php-mail-mimedecode/README.Debian
/usr/share/doc/php-mail-mimedecode/copyright
/usr/share/doc/php-mail-mimedecode/changelog.Debian.gz
/usr/share/php/tests/Mail_mimeDecode/tests