MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links but one points to a potentially malicious PDF. The ML classifier strongly indicates maliciousness. The primary attack pattern involves luring users to a malicious URL under the guise of free educational materials.
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/wb?keyword=calculus%20limits%20worksheets%20free
- http://files.treasurlybydima.com/uploads/1/3/1/4/131411199/buroni.pdf
- http://files.kingdom-mindedmoms.com/uploads/1/3/0/7/130739697/vititopiviwokuje.pdf
- http://files.signorimanisalonandspa.com/uploads/1/3/1/3/131398323/tifazupamit.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0439/3477/7499/files/ratogozenujopefeg.pdf
- https://cdn.shopify.com/s/files/1/0427/9785/8972/files/hidradenitis_suppurativa_diet.pdf
- https://cdn.shopify.com/s/files/1/0431/5850/3584/files/yamaha_rx_v373_manual.pdf
- https://cdn.shopify.com/s/files/1/0435/8799/3763/files/change_scroll_direction_windows_10.pdf
- https://cdn.shopify.com/s/files/1/0452/1210/6912/files/various_definitions_of_curriculum.pdf
- https://cdn.shopify.com/s/files/1/0432/6978/3720/files/tojulatozubo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.pdf
- https://cdn.shopify.com/s/files/1/0429/0877/8663/files/computer_basics_worksheet_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0430/7514/1794/files/xiwasovuvin.pdf
- https://cdn.shopify.com/s/files/1/0438/2107/2546/files/los_de_abajo_mariano_azuela.pdf
- https://cdn.shopify.com/s/files/1/0438/8824/6936/files/1705899066.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006912.bin4cf3ec3920578d84fd02a24557f1ce1ed0f8284bd98bdad89a40f21e04c364fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6912 | 5180 bytes |
font_01_sfnt_off00007a9a.binceffd657457613ce496e279a7e344e63ac8668c005b5be7a6398d8d19c4598c0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A9A | 10120 bytes |
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