MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, directing users to `https://ttraff.cc/wix?keyword=anton+linear+algebra+11th+edition`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many pointing to `static.usrfiles.com`. The ML classifier strongly flagged this PDF as malicious. The presence of these elements indicates a social engineering attempt to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting.
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.cc/wix?keyword=anton+linear+algebra+11th+edition
- https://static.usrfiles.com/ugd/b8c837_fdc939491d92479f8f9e78a9789a4662.pdf
- https://static.usrfiles.com/ugd/b8c837_97475afa840e4ea294ac917e8e89c985.pdf
- https://static.usrfiles.com/ugd/b8c837_a1bb8cf8e53b438e881b1f38b5e3a420.pdf
- https://static.usrfiles.com/ugd/f84671_520eea28b6664821acd47a2f170c6151.pdf
- https://static.usrfiles.com/ugd/b8c837_0dfc3785306543a388e23d8a6da47aa9.pdf
- https://cdn.shopify.com/s/files/1/0428/9875/1641/files/kubectl_commands_cheat_sheet.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35403674757.pdf
- https://static.usrfiles.com/ugd/cc14e4_5d9f89ef03d74f3b8a91b9b7c0d316fd.pdf
- https://static.usrfiles.com/ugd/3ceeb9_92f26a5f6fce4014acdc01af1b7471fa.pdf
- https://static.usrfiles.com/ugd/b8c837_1c8f0f166b774fa6be07bed4b8b3d198.pdf
- https://static.usrfiles.com/ugd/b8c837_951e570927e8432a904e5e6ccbc294f8.pdf
- https://static.usrfiles.com/ugd/b9801a_55b6cd7f162a4507993456ca8f6ce08d.pdf
- https://cdn.shopify.com/s/files/1/0435/6079/6318/files/zigasowomewewazefeva.pdf
- https://cdn.shopify.com/s/files/1/0434/9899/5878/files/kovosolut.pdf
- https://cdn.shopify.com/s/files/1/0437/4586/9985/files/cisa_certification_books.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000569b.bin1d36448b81ad1729d5e0475db7164df4040fc25a788c0e8c6235bc1310253c57 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x569B | 5092 bytes |
font_01_sfnt_off000067dc.bina96927d9d970101357450223bf3a1bdcb97a8243184343e896d605333cbfe7f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67DC | 12304 bytes |
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