MALICIOUS
92
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded URLs pointing to external PDF files, as detected by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged this as malicious, the specific intent appears to be a link farm or SEO poisoning scheme rather than direct payload delivery. The URLs themselves are not directly malicious but serve as the core of the attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9716
Heuristics 2
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://muicuiu.dumb1.com/9a09a02a05a00a03/National-Audubon-Society-Field-Guide-to-California-Regional-Guide-Birds-Animals-Trees-Wildflowers-Insects-Weather-Nature-Pre-Serves-and-More-by-Peter-Alden.pdf
- http://muicuiu.dumb1.com/8a01a02a02a08a04/National-Audubon-Society-Field-Guide-to-North-American-Wildflowers-Eastern-Region-by-National-Audubon-Society.pdf
- http://muicuiu.dumb1.com/8a01a08a01a00a00/National-Audubon-Society-First-Field-Guide-Insects-by-Christina-Wilsdon.pdf
- http://muicuiu.dumb1.com/8a01a02a05a02a08/National-Audubon-Society-Field-Guide-to-North-American-Trees--W-Western-Region-by-Elbert-L-Little.pdf
- http://muicuiu.dumb1.com/8a01a08a02a05a02/National-Audubon-Society-First-Field-Guide-Reptiles-by-John-L-Behler.pdf
- http://muicuiu.dumb1.com/8a01a08a02a00a06/National-Audubon-Society-Guide-to-Nature-Photography-by-Tim-Fitzharris.pdf
- http://muicuiu.dumb1.com/8a01a08a01a09a04/National-Audubon-Society-Field-Guide-to-North-American-Fossils-by-Ida-Thompson.pdf
- http://muicuiu.dumb1.com/8a01a02a03a03a09/The-Audubon-Society-Field-Guide-To-North-American-Birds-Eastern-Region-by-John-L-Bull.pdf
- http://muicuiu.dumb1.com/8a01a07a09a06a02/The-Audubon-Society-Field-Guide-to-North-American-Mushrooms-by-Gary-Lincoff.pdf
- http://muicuiu.dumb1.com/8a01a08a02a00a04/The-Audubon-Society-Field-Guide-to-North-American-Mammals-by-John-O-Whitaker.pdf
- http://muicuiu.dumb1.com/8a01a08a02a04a05/Audubon-Life-List-Journal-by-National-Audubon-Society.pdf
- http://muicuiu.dumb1.com/9a08a03a00a00a06/National-Geographic-Pocket-Guide-to-the-Weather-of-North-America-by-Jack-Williams.pdf
- http://muicuiu.dumb1.com/8a01a08a01a00a03/The-Audubon-Society-Encyclopedia-of-North-American-Birds-by-John-K-Terres.pdf
- http://muicuiu.dumb1.com/8a01a08a02a04a02/National-Audubon-Society-Birder-s-Handbook-by-Stephen-W-Kress.pdf
- http://muicuiu.dumb1.com/9a07a07a00a05a07/Birder-s-Handbook-A-Field-Guide-to-the-Natural-History-of-North-American-Birds-by-Paul-R-Ehrlich.pdf
- http://muicuiu.dumb1.com/3a04a01a08a05a02/Can-Poetry-Save-the-Earth-A-Field-Guide-to-Nature-Poems-by-John-Felstiner.pdf
- http://muicuiu.dumb1.com/4a03a05a06a05a08/Wild-Urban-Plants-of-the-Northeast-A-Field-Guide-by-Peter-del-Tredici.pdf
- http://muicuiu.dumb1.com/9a08a08a08a09a07/National-Geographic-Guide-to-America-s-Outdoors-Southwest-Nature-Adventures-in-Parks-Preserves-Forests-Wildlife-Refuges-Wildnerness-Areas-by-Mel-White.pdf
- http://muicuiu.dumb1.com/8a01a04a02a04a06/Subway-Surfers-The-Unofficial-Field-Guide-1-to-30-Quick-Upgrade-Guide-by-chen-xiaolong.pdf
- http://muicuiu.dumb1.com/1a00a04a04a02a00a08/Field-Guide-to-the-U-S-Economy-A-Compact-And-Irreverent-Guide-to-Ecnomic-Life-in-America-by-Jonathan-Teller-Elsberg.pdf
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