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How to Examine Polyglot Files with Spectra Analyze

ID: f2753766-5c28-51cf-b6a4-f68cad873eea

STIX ID: report--f2753766-5c28-51cf-b6a4-f68cad873eea

Feed Name: ReversingLabs Blog

Threat Score
65/100

Date Published: 2026-03-17

Date Updated: 2026-04-29

Author: Josh Morin

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Spectra Analyze identified a GIF89a polyglot image containing an embedded PHP web shell (Dirtelti-family) acting as a backdoor; the report summarizes static and dynamic analysis results, extracted IOCs (domains, extracted files), YARA detections, and detection/triage guidance for SOCs and analysts.

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