This report analyzes two recent malware distribution campaigns that leverage malvertising techniques. The campaigns deliver the WorkersDevBackdoor and MadMxShell backdoors, which have data exfiltration capabilities and can facilitate ransomware deployment. The malware's delivery infrastructure, including command and control servers, exhibits overlapping connections, suggesting potential collaboration or shared resources between the threat actors behind these campaigns. The report provides insights into the tactics, techniques, and procedures employed in these campaigns, highlighting their targeting of IT personnel through tailored payloads and victim filtering mechanisms.