A friend forwarded a link allegedly about Coles giving out $500 vouchers. The link was to coles.com, not coles.com.au and presented a 4 question survey, then asked you to share the link via WhatsApp and then you could claim the voucher. There were several things slightly wrong with the site, it had some obscure http not https URL, a grammar mistake here and there, all the people who commented had German sounding names. I suspect they try to get ID information from you on the claim page. The share link thing is to spread the scam of course.
Be careful out there.
Friend? I never knew scammers could be friends :)