This indicates an attack attempt to exploit an Out of Bounds Read Vulnerability in Adobe Systems Acrobat Reader DC (Continuous).
Adobe Systems Acrobat 2015 2015.006.30508 and earlier
Adobe Systems Acrobat 2017 2017.011.30156 and earlier
Adobe Systems Acrobat DC (Continuous) 2019.021.20061 and earlier
Adobe Systems Acrobat Reader 2015 2015.006.30508 and earlier
Adobe Systems Acrobat Reader 2017 2017.011.30156 and earlier
Adobe Systems Acrobat Reader DC (Continuous) 2019.021.20061 and earlier versions
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.