Malware Insights
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits a 'Browser extension / update installation lure' heuristic, indicating a social engineering attempt to trick the user into clicking the link. The primary malicious URL identified is https://ttraff.cc/wix?keyword=bksb+functional+skills+maths+level+2+answers, which likely serves as a gateway to further malicious content or exploits. The PDF also hosts a link farm pointing to numerous other PDFs on static.usrfiles.com, suggesting an attempt to manipulate search engine results or distribute content.
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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=bksb+functional+skills+maths+level+2+answers
- https://static.usrfiles.com/ugd/b8c837_f702f7ca07b3449f80b3d98b7fa04ab3.pdf
- https://static.usrfiles.com/ugd/b8c837_0cbffd95719a48abb4eb29ecff715736.pdf
- https://static.usrfiles.com/ugd/b8c837_76426c93836a446db7be881da02757fc.pdf
- https://static.usrfiles.com/ugd/b8c837_695ba211d7f043d898ec67f7cbd7a68f.pdf
- https://static.usrfiles.com/ugd/b8c837_f8437bfbc26b424c91f8d9ba040621c6.pdf
- https://cdn.shopify.com/s/files/1/0445/6543/0431/files/cfp_exam_prep.pdf
- https://cdn.shopify.com/s/files/1/0431/9136/9888/files/sadavezadafade.pdf
- https://cdn.shopify.com/s/files/1/0440/3471/9909/files/wotogatovotenap.pdf
- https://cdn.shopify.com/s/files/1/0437/4052/8792/files/christian_desktop_backgrounds.pdf
- https://cdn.shopify.com/s/files/1/0435/8720/7327/files/mugomimena.pdf
- https://cdn.shopify.com/s/files/1/0428/8167/9523/files/2770412490.pdf
- https://cdn.shopify.com/s/files/1/0437/7142/9016/files/12686751432.pdf
- https://static.usrfiles.com/ugd/b8c837_cea0e7fddef34c329f71ace3b7fb39fe.pdf
- https://static.usrfiles.com/ugd/b8c837_ed9871661708467aadf8c849b8467d8d.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_off00005d0d.bin16b5075db63f5d6ba8a31e333c6398e97a273831af85bc48a006f9badd7d4ac3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D0D | 5656 bytes |
font_01_sfnt_off00007035.binfe7c5574085d4e64c6b13beb15760bebee32dc3a437ba36411c678fe5156e345 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7035 | 11460 bytes |
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