has used spearphishing attachments to deliver Microsoft documents containing macros or PDFs containing malicious links to download either  Bokbot  or .(Citation: CrowdStrike Grim Spider May 2019)
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: has used spearphishing attachments to deliver Microsoft documents containing macros or PDFs containing malicious links to download either  Bokbot  or .(Citation: CrowdStrike Grim Spider May 2019) ### Response: T1566.001.