「URLVoid」 is an online service that can scan a website address with multiple scanning engines such as Google Diagnostic, Norton SafeWeb, MyWOT to detect the possible dangerous. And you can also check reputation of domains and subdomains.
「Extract URL」is a service of URLVoid, you can unshorten urls with it.
1. Unshorten the shortened url with Extract URL
2. Use URLVoid to check the website reputation
3. After step 2, don't forget to start a Virus Scan
You might be interested in it <5 Free Online Antivirus Scanners>.