MALICIOUS
170
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF is an image-only lure designed to trick users into clicking on invisible links. These links repeatedly point to a payload URL, which is a common tactic for delivering malware. ClamAV identified the sample as Pdf.Downloader.Bumblebee, indicating it's likely a downloader for the Bumblebee malware family. The primary attack vector involves embedding malicious links within the PDF that lead to the download of a ZIP archive.
Machine Learning
- Nyx PDF Classifier malicious score 0.9464
Heuristics 4
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Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LUREPDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
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ClamAV: Pdf.Downloader.Bumblebee-9988748-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Downloader.Bumblebee-9988748-0
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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 102 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://firebasestorage.googleapis.com/v0/b/tonal-depth-377622.appspot.com/o/cQtCXoljqM%2FContract_02_21_Copy%2332.zip?alt=media&token=0af57743-0613-4fa8-90c9-fd5045f227bc
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