Potentially Suspicious - Malware

Hello everyone, Quttera Web Malware Scanner reports the following problem

FILE: wp-content/themes/sydney/woocommerce/css/wc.css
FILE_MD5: cae8657100cc836f0cbcdbb4bcb5c019
SEVERITY: enPotentiallySuspiciousThreatType
ENGINE: fscanner
THREAT_SIG: 077ed38850a47bae3e86bec24784fd6a
THREAT_NAME: Heur.PHP.Encoded.gen.271C
THREAT: \73\73\73\73\73…
DETAILS: Potentially suspicious obfuscated PHP threat

Can you give me information about this?
many greetings markus