Honestly speaking, the telegram has now become the den of hackers and scammers that even a chat from strangers is very suspicious that needs to be extremely careful and cautious. Clicking on links sent to your dm should be avoided especially when you are recieving it from an unknown account that you have never chatted in the past. Always remember that admin or mods do not dm first on telegram channels or groups so if anyone dm you claiming what they are not, you have every right to report and block them right the way. Your safety should be your concern so as to protect yourself from scammers and hackers. Do not chat with strangers as they may lure you into clicking link sent to you all in the name of wanting to help you resolve an issues in diguse to be admins and mods.