Yes it is possible, but if i go that site without ublock, avast report 2 detections. One C version that marked js. file and S version which marked html code. But when i block that js file by ublock, avast still report me S version even that miner cannot work without that js.
I found S version trigger this script:
(script)
var miner = new C o i n H i v e. A n o n y m o u s('XXXXXXXXXXXXXXXXXXXXXXXXX', {
// threads: X,
throttle: X,
});
miner.start();
(/script)