This indicates an attack attempt against a Memory Corruption vulnerability in Adobe Illustrator.
The vulnerability is caused by an error when the vulnerable software handles a crafted PCT file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the user, via a crafted PCT file.
Illustrator 2020 24.0.2 and earlier versions
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the latest update from the vendor.