It is because you make a GET and not a POST and you don't valorized some field.

Replace this in your code:

$url->query_form(
   'CrdNumber' => "144549",
   'NumRows' => "25",
   'SearchType' => "2",
   'ORG_PK' => "000",
   'Save' => "IAPDSearch",
) ;

my $response = LWP::UserAgent->new->post($url) ;
[download]

and it will work.