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Netskope Threat Research Labs has observed phishing attacks using decoy PDF files , URL redirection , and Cloud Storage services to infect users and propagate malware .
 ( phishing: phishing attacks,  PDF files: trusted entity, URL redirection: trusted entity, Cloud Storage services: trusted entity, using decoy: attack pattern, propagate malware: purpose, infect users: purpose) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( phishing: phishing attacks,  PDF files: trusted entity, URL redirection: trusted entity, Cloud Storage services: trusted entity, using decoy: attack pattern, propagate malware: purpose, infect users: purpose) 