$ perl -I /usr/lib64/perl5/vendor_perl/5.26.2/Image/ pdf2john.pl file.pdf
Name "ExifTool::configFile" used only once: possible typo at pdf2john.pl line 36.
Name "ExifTool::langs" used only once: possible typo at pdf2john.pl line 771.
Name "ExifTool::charsetName" used only once: possible typo at pdf2john.pl line 589.
Name "ExifTool::langName" used only once: possible typo at pdf2john.pl line 771.
Can't locate object method "new" via package "ExifTool" at pdf2john.pl line 403.