Malware Insights
The PDF contains a mass external link farm, with many links pointing to PDF files hosted on various domains. One prominent link, 'https://ttraff.me/wix?keyword=adding+s+or+es+to+verbs+worksheet+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to a worksheet and includes this malicious URL, suggesting a lure to download further malicious content. The presence of a 'Visual download / call-to-action button lure' heuristic further supports this. The file is generated by wkhtmltopdf, a tool often used to create PDFs from web content, which may have been used here to disguise the malicious links.
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.me/wix?keyword=adding+s+or+es+to+verbs+worksheet+pdf
- http://bitisuro.ksuflashathon.com/uploads/1/3/1/1/131164312/vedokuxameb.pdf
- http://files.houstons.net/uploads/1/3/1/4/131453919/novimetosanegak.pdf
- http://files.cribworksdigitalaudio.com/uploads/1/3/1/3/131379174/aadd28902c346.pdf
- https://da1b6f5d-d71a-4b99-b3b1-f3372cbab093.filesusr.com/ugd/1b6cec_7afe63b41ab943609a7824a3e7e72cea.pdf?index=true
- https://162b3c93-4260-4db2-978d-597113c829d0.filesusr.com/ugd/76aeb6_7347728ba73c46ce946108bacbcb3b2b.pdf?index=true
- https://970a87bf-addb-4bb1-9fc6-97941262d760.filesusr.com/ugd/f3bfbb_f49bcfc37fa5430eb1703639e55dfee8.pdf?index=true
- https://5742576d-b164-42c1-a8e8-9fc50bc3eac1.filesusr.com/ugd/0cd3a8_7c59e93c2aa248da946183b4eba3c1c2.pdf?index=true
- https://0163a90f-ca36-4cb9-af0a-4d5cd7de5019.filesusr.com/ugd/b14caa_056dd54f297342abae8f469cca28175d.pdf?index=true
- https://c65613ff-4031-4f80-9dd9-3f1892ad88b1.filesusr.com/ugd/c638b7_250c0e03ac5244f38ad4b1f84cd6f6b8.pdf?index=true
- https://aa36b373-23db-41b3-beb0-6156902c5535.filesusr.com/ugd/a382ee_5941bc222e3b4327bec52f258286cd7b.pdf?index=true
- https://b3d27323-e901-4a71-a331-b5b866a20535.filesusr.com/ugd/dc6899_46ed57c084ef438a87b9197323410a0b.pdf?index=true
- https://0b76928b-ffbc-4246-b4d5-1159e7e6094f.filesusr.com/ugd/3f0e57_65624776a67c4b8199c28d347f281ec4.pdf?index=true
- https://81394e64-2694-4571-b540-23f0e00ef9bb.filesusr.com/ugd/1e533a_1c33539100ed4a81958607ffe62c9e0e.pdf?index=true
- 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_off00004dc2.bind1d3419c27673e882eee1510c589048967e7b9df2637e784d4ae9064ecb439f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4DC2 | 5404 bytes |
font_01_sfnt_off0000603b.bin01c401178f809dd1edfeb485bd90c29af984d1ea63fa431699107ed7adb87f9d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x603B | 10500 bytes |
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