MALICIOUS
128
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, characteristic of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for academic notes, combined with a call-to-action phrase. The primary malicious URL is ttraff.ru, which redirects to a Shopify-hosted PDF, suggesting a multi-stage redirection or download process.
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.ru/pify?keyword=ma6453+probability+and+queueing+theory+notes+pdf
- http://nejodev.shadecreekwatershed.org/uploads/1/3/2/7/132740480/zagumusebawupudake.pdf
- http://files.pack131-wrentham.com/uploads/1/3/0/8/130813548/xisavatagesaxotutaxe.pdf
- http://files.fretnotes.com/uploads/1/3/1/6/131606262/rutagezigob_sigumolakuxavab_tugararagarika.pdf
- http://dopufo.npnewbies.com/uploads/1/3/1/4/131407089/sapisejedidivore.pdf
- http://files.kittyangel.org/uploads/1/3/1/6/131607066/pasiv.pdf
- https://cdn.shopify.com/s/files/1/0436/7246/9669/files/nivajumeweboteluvuwabed.pdf
- https://cdn.shopify.com/s/files/1/0441/4029/8392/files/guwom.pdf
- https://cdn.shopify.com/s/files/1/0435/9792/2461/files/algebra_laws.pdf
- https://cdn.shopify.com/s/files/1/0431/0895/8362/files/14119834606.pdf
- https://cdn.shopify.com/s/files/1/0431/8016/3227/files/titeb.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdf
- https://cdn.shopify.com/s/files/1/0427/3196/2535/files/folumoto.pdf
- https://cdn.shopify.com/s/files/1/0440/7692/5078/files/3453363296.pdf
- https://cdn.shopify.com/s/files/1/0439/1347/8312/files/fogavosamozuro.pdf
- https://cdn.shopify.com/s/files/1/0432/5657/8212/files/1636094472.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_off00005d3a.bind15273c7d1e95c8c7bfbe30fc59ca46cd1b70b47a5f3524fade2834855ce65bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D3A | 6208 bytes |
font_01_sfnt_off00007240.bin48457c43ea822930e150cc372d63e5e84b997f49cd50e62a2378fdbf8d48eb04 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7240 | 10524 bytes |
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