Hello nikolay,

Is this working for you?

#!/usr/bin/perl
use strict;
use warnings;

use Encode;
use URI::Escape;

binmode STDOUT, ":utf8";

my $in = "%d0%be%d0%b1/%d1%81%d1%82%d0%b5%d0%bd";
my $text = Encode::decode('utf8', uri_unescape($in));

print $text . "\n";

__END__

$ perl test.pl
об/стен

Update: Some time ago there was a similar question PDF::API2 printing non ascii characters. Although the tittle is not the same check it out it will help to review some information.

Looking forward to your reply, BR.