MALICIOUS
170
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple invisible links pointing to a ZIP file hosted on 'amrecafrica.org'. Heuristics indicate these links are designed to deliver a payload. ClamAV detection and ML classification strongly suggest this is a QBot variant, a known banking trojan. The embedded URL is the primary indicator for the next stage of the attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.7493
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.Trojan.QBot-9982402-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Trojan.QBot-9982402-0
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PDF paints image(s) but contains no text operators medium PDF_IMAGE_ONLY_LUREPDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
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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 http://amrecafrica.org/docdir/SCANS_WO7770.zip
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