Sunbelt Software provides an online service for free malware analysis. Those who want to test any application for malware activities, can be submitted for testing. Once you submit your sample for analysis they will send you a report to the email id you provided while submitting the sample.
Currently there is limitation of 12288 KB for the application sample. But this would be sufficient, I believe. You can submit your sample here. [ Submit ]
Also please take your time to share, if you find some new malware.
Download free Windows Malicious Software removal tool.