MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as an IELTS study resource. The document also hosts a large number of external PDF links, many of which point to user-uploaded content, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or scam attempt.
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=ielts+reading+and+writing+answer+sheet+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://static.usrfiles.com/ugd/b8c837_c193e1e9e1414d5ea30560e1a7f364b9.pdf
- https://static.usrfiles.com/ugd/ee4a13_e154f60fabe14aa2b0696c5376b4a8b7.pdf
- https://static.usrfiles.com/ugd/b8c837_c064f48203fc4112bd9e96fab972b9f6.pdf
- https://static.usrfiles.com/ugd/b8c837_31ae5b9fda44486e9c06b3ae4c9525ad.pdf
- https://static.usrfiles.com/ugd/d1c05f_9be35d3b1eac4a71b342305e514888bc.pdf
- https://static.usrfiles.com/ugd/b8c837_17821927c5e34fd98c198a30765cdcdf.pdf
- https://static.usrfiles.com/ugd/b8c837_aeb2c51e61864088a723f52a2f679481.pdf
- https://cdn.shopify.com/s/files/1/0430/2487/5674/files/galetarupa.pdf
- https://cdn.shopify.com/s/files/1/0436/1450/3075/files/jabaxumibuju.pdf
- https://static.usrfiles.com/ugd/4c1554_5a03bb9b50434bacb5b78fbaff90b9f7.pdf
- https://static.usrfiles.com/ugd/6240f8_c8841d65ab414a80aca8844bc83c4ae1.pdf
- https://static.usrfiles.com/ugd/5b604d_e3f107a481dd485dbf3512a3b7b07464.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000052f9.bin376f0273f9a6c73a85c6e20601d0dc7d6c01fee126c8bf2e4d51ffbe30ccfddf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x52F9 | 5008 bytes |
font_01_sfnt_off000063f8.bina8c4e85f61e96f43543d73b83151e3a005d453592e755907788702dfdd251448 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63F8 | 10476 bytes |
font_02_sfnt_off000087cb.bin1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x87CB | 4324 bytes |
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