• Sublime Core Feed
Low Severity

Attachment: PDF with ReportLab library and default metadata

Labels

Credential Phishing
PDF
Evasion
File analysis
Exif analysis

Description

Detects PDF attachments generated using the ReportLab PDF Library with default anonymous metadata values, including untitled document, anonymous creator/author, and unspecified subject. This combination of characteristics is commonly associated with automated PDF generation tools used in malicious activities.

References

No references.

Sublime Security
Created Feb 27th, 2026 • Last updated Feb 27th, 2026
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any(attachments,
        beta.parse_exif(.).producer == "ReportLab PDF Library - (opensource)"
        and beta.parse_exif(.).title == "untitled"
        and beta.parse_exif(.).creator == "anonymous"
        and any(beta.parse_exif(.).fields,
                .key == "Subject" and .value == "unspecified"
        )
        and beta.parse_exif(.).author == "anonymous"
)
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