Cybercriminals will try to infect unaware internet users by sending them malicious files and links, the cybercriminals do this as it will allow them to generate an income from the information they steal and the victims that they infect. It is always wise to scan random files with an antivirus scanner, if you do not have one, then simply use the VirusTotal website to scan malicious sites and domains.
The VirusTotal website is a free environment which allows you to run a malware check via 57 Antivirus services. This means that you will get a clear insight in the file that you uploaded. If the file is malicious, you will get warned, if the file is clean, you will be informed about it. I strongly urge everyone to stay vigilant and aware for these type of scams.