PDFSIDER Malware Actively Exploited to Evade Antivirus and EDR Defenses

Security researchers have identified a sophisticated backdoor malware variant, PDFSIDER, that leverages DLL side-loading to evade endpoint detection and response (EDR) systems. The threat demonstrates advanced persistent threat (APT) tradecraft, combining evasion mechanisms with encrypted command-and-control capabilities to maintain covert access on compromised systems. PDFSIDER’s infection chain originates through spear-phishing campaigns delivering ZIP archives containing […]

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