Check Safari preferences to see if your Home page is what you had set originally.
What version of OS X are you using?
You may also want to download and install a copy of AVG for Mac, it's Free, and is apparently quite good at finding those annoying pieces of malware.
Recently I have started receiving pop-ups in the bottom right and left corners of every page I navigate to, which are either fake "hey I want to talk" messages or pictures of a graphical nature. Some are in english and some in russian. The fake messenger-type ones are even making sounds. Today I also noticed every time I try to click on internet links I get a new tab opening up which directs me to russian web pages or online shopping pages, and sometimes after the messenger-type pop-up, I'm getting a pop-up in a new browser window advertising adult cams.
I thought the problem might be isolated to Chrome, but when I tried using safari I got the same issues.
Can somebody please help and point me in the right direction to remove what ever is causing this? I tried installing adwaremedic but it says my computer is fine, and I tried some apple support about "removing unwanted adware that displays pop-up ads and graphics on your Mac", but the files it tells me to look for are not on my computer.
Any assistance would be greatly appreciated as my computer screen is currently being invaded any time I'm online!