MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of embedded links, many pointing to external PDF files hosted on disposable or SEO-optimized domains. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. This suggests the document is part of a link farm designed to generate traffic or distribute further malicious content, rather than providing legitimate information.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://gettraff.ru/123?keyword=heat+transfer+textbook+by+rk+rajput+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4366339/normal_5f871a94582bb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367645/normal_5f945fe37738b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384460/normal_5f962afc8d112.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422373/normal_5f982c4ba24d8.pdfIn PDF document text
- https://xodalolekuxol.weebly.com/uploads/1/3/4/1/134108590/kufekesigowopi-kikutunav-wagokokezeni-duvekeg.pdfIn PDF document text
- https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/fasuraruleze.pdfIn PDF document text
- https://sasenepekevob.weebly.com/uploads/1/3/4/2/134266747/senedep_rijom_rozefoniwekexun_wakurufa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369496/normal_5f9326dd75494.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365570/normal_5f8dfb662cb4a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419430/normal_5f978144acc92.pdfIn PDF document text
- https://fimetopim.weebly.com/uploads/1/3/4/3/134399480/diwevaxaxabotaset.pdfIn PDF document text
- https://silemixijotin.weebly.com/uploads/1/3/4/4/134463531/3ac014d1cc1.pdfIn PDF document text
- https://sesorefamasupuv.weebly.com/uploads/1/3/1/0/131071262/30fd720b398.pdfIn PDF document text
- https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/pudide_gonojewo.pdfIn PDF document text
- https://fupesovuzej.weebly.com/uploads/1/3/4/0/134016868/8661282.pdfIn PDF document text
- https://puxolulif.weebly.com/uploads/1/3/4/3/134356270/5501378.pdfIn PDF document text
- https://tifubevova.weebly.com/uploads/1/3/4/4/134458665/metajudej-nituropajajidix.pdfIn PDF document text
- https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/fetukonavaga.pdfIn PDF document text
- https://sifizebutu.weebly.com/uploads/1/3/0/8/130814914/poropafuxiruw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1016/8744/files/rekemetefejiloxiruja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4202/9215/files/barew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0957/1989/files/3635532975.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004af6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4AF6 | 5412 bytes |
SHA-256: 52c6d161e5199216684a2e9dff987c09e4da62d50dc94cee3dced5ebccd677c9 |
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font_01_sfnt_off00005d70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D70 | 9544 bytes |
SHA-256: 7728e4e090da1b697d8a7342ffbab641052ddfd1c623bedce33c7a56378e950d |
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