Software Informer does not host any executable files, or programmes on its server. SI is just a medium through which users are either redirected to the developers site to check about the downloads, or it just gives direct links to freewares from the developers site. For this particular programme, someone who is using it, is also using the software informer client, due to which the server has pulled up the data as a messenger. However, I have cross checked & the SI page redirects the users to the Phillipines Navy website's home page.
I understand that there is no software named PM Messenger uploaded here.
In case you still find something wrong, please fill out the following feedback form, & ask the admins to delete the details. Also, please check if someone is using the SI client from your end, then please get them to uninstall the same from Add/Remove Programmes in the Control Panel.