This is a little old (five days based on the last update), but TrendMicro put on their blog about fake LinkedIn profiles which have links leading to malware.
The basics:
With respect to the last point, it's still disturbing. Again it's a case of attackers going after a legitimate and trusted site to get users to be directed to malware. In this case they aren't hacking the site, rather using the functionality provided to end users.
