/usr/lib/x86_64-linux-gnu/ is in libwww-curl-perl 4.17-4build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.26/
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/Curl/
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/Curl/Easy.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/Curl/Form.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/Curl/Multi.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/Curl/Share.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/WWW/Curl.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/WWW/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/WWW/Curl/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/WWW/Curl/Curl.so