You know there are alternatives to Pfizer that are classed as halal (at least according to the indo authorities). Or are you just using your religion as an excuse not to be vaxxed?
The immigration check everything but its hard for them to be 100% perfect in checking as all the certs look different, you could prob evade them easily with photoshop. The airlines also check and i think its likely they will be more likely to catch you than the immigration here. What you are proposing to do is illegal...isnt that in itself haram from an islamic standpoint?