MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a mass of external links, masquerading as a "British Council reading B1 PDF" to lure users. One of these links, https://ttraff.ru/wix?keyword=british+council+reading+b1+pdf, is identified as a malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of numerous links suggests a link farm or SEO poisoning tactic to distribute further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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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://ttraff.ru/wix?keyword=british+council+reading+b1+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/98e298_fe40273d8edb42dd902ca9267cfa71ff.pdf
- https://static.usrfiles.com/ugd/b8c837_efecfac215454b0e9be89bf658fd3c9b.pdf
- https://static.usrfiles.com/ugd/ae059d_bd64273f8ece466a8122263f92cfbcf4.pdf
- https://static.usrfiles.com/ugd/b8c837_c89056227e6f45a3a5d8eed9a9e47951.pdf
- https://static.usrfiles.com/ugd/69b86f_ccd193d1203245f2bdfa55013ff4b85c.pdf
- https://cdn.shopify.com/s/files/1/0431/6784/2465/files/63556359649.pdf
- https://cdn.shopify.com/s/files/1/0429/9925/1093/files/diloloviladareledazozap.pdf
- https://cdn.shopify.com/s/files/1/0433/7680/3990/files/lodefiz.pdf
- https://static.usrfiles.com/ugd/f4de5e_7bd6375352304c579b9af303692a001e.pdf
- https://static.usrfiles.com/ugd/52b593_8d02685077b64e2e842bbf31e172747f.pdf
- https://cdn.shopify.com/s/files/1/0429/9928/3861/files/symmetric_tree_leetcode.pdf
- https://cdn.shopify.com/s/files/1/0430/3156/0354/files/nuguribagotusa.pdf
- https://cdn.shopify.com/s/files/1/0435/1187/3688/files/wedamexafegomizuxaxus.pdf
- https://cdn.shopify.com/s/files/1/0428/9898/1030/files/95076257303.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005d44.binc336f0f8a92694a33e9659d0517b74b1726640694c7083614a0a93d52b15d18a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D44 | 5660 bytes |
font_01_sfnt_off00007086.bindd41e13e187da98747467c573423a8b634c428dec7bfd5bc00f6b26ff7155f98 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7086 | 11060 bytes |
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