diff --git a/summary/2021/Global Advanced Persistent Threats 2020 Annual Report-RedDrip Team.pdf b/summary/2021/Global Advanced Persistent Threats 2020 Annual Report-RedDrip Team.pdf
deleted file mode 100644
index 7b005ec..0000000
Binary files a/summary/2021/Global Advanced Persistent Threats 2020 Annual Report-RedDrip Team.pdf and /dev/null differ