Your tag is a genuine MIFARE Classic Ev1, which has signature data etc stored outside of user memory. We print it in order not to loose information about the tag but the memory sectors are not writable. So its of no use when dumping the memory. We exploit the fact it has static keys in order to be able to run Hardnested with success against that tag.
Since last year with regards to Doegox findings with FUDAN cards and backdoor keys, we try to log and print all kinds of information about tags. We never know if it makes a difference.