To avoid it's zero day vulnerability temporarily.......
In response to confirmed reports of a zero-day vulnerability in its PDF Reader software, Adobe today urged users on all platforms to disable JavaScript as a temporary measure to avoid code execution attacks.
In sharp contrast to previous problems in responding to known security issues, the company acted swiftly to provide information on the affected software versions and offer mitigation guidance to its customers.
Thanks Barney!! Did this here: Launch Acrobat or Adobe Reader. Select Edit>Preferences Select the JavaScript Category Uncheck the ‘Enable Acrobat JavaScript’ option Click OK