MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by an ML classifier with high confidence and contains a large number of external links, many pointing to other PDFs. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute further malicious content. The presence of multiple external URIs and the PDF_SEO_LINK_FARM heuristic strongly support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 5
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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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External URI info PDF_URIPDF contains an external URL action
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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://leonvi.ru/award?keyword=define+psychomotor+domain+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4498978/normal_5fe357f41e30f.pdfIn PDF document text
- https://felomogolupa.weebly.com/uploads/1/3/4/3/134345494/767146.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452837/normal_60594dff91f77.pdfIn PDF document text
- http://lamakexo.scienceontheweb.net/what_is_a_social_security_activation_code.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427514/normal_5fdaaa3d474f1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476272/normal_606aab59a99ca.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4373239/normal_60045b8e6c923.pdfIn PDF document text
- http://bapadama.medianewsonline.com/42178778540.pdfIn PDF document text
- http://kewatupu.scienceontheweb.net/what_inspires_me_to_work.pdfIn PDF document text
- http://noxogejukebe.mypressonline.com/72238211536.pdfIn PDF document text
- https://nenikekawudiw.weebly.com/uploads/1/3/4/4/134468161/122167.pdfIn PDF document text
- https://gowigejovijori.weebly.com/uploads/1/3/0/7/130740297/libebixofopavax_xuzufepit_kuzet.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386081/normal_603c66195d9b1.pdfIn PDF document text
- http://rixujewo.getenjoyment.net/dejuxunofaw.pdfIn PDF document text
- http://gepavozo.mygamesonline.org/59019205511.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370989/normal_601c88d79ed17.pdfIn PDF document text
- https://zuzatalo.weebly.com/uploads/1/3/4/3/134326893/eec2f95f36f7d.pdfIn PDF document text
- http://nokasosozigof.mypressonline.com/alex_rider_season_2_episode_1.pdfIn PDF document text
- https://tedotedonux.weebly.com/uploads/1/3/0/7/130775879/pubomarowuleziwis.pdfIn PDF document text
- http://zizodoroluxonaf.sportsontheweb.net/meronozusugodeputiji.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://0d3c4653-ec4b-4b04-9c20-59e348ba858e.filesusr.com/ugd/62200f_b1427a1aac414c63835ebbd813996a4f.pdf?index=trueIn PDF document text
- https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_f0fdbc4df6e642d5852c72db4f12c992.pdf?index=trueIn PDF document text
- https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_6f03763fabef4ad9b1455181d6c5420f.pdf?index=trueIn 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f833.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF833 | 5252 bytes |
SHA-256: cc58e959bd873fde7d3303974cdea8bcb5a3190e97827f96f8369e9ca659a47a |
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font_01_sfnt_off000109e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109E6 | 10304 bytes |
SHA-256: a4cbd480fa57dadb13dc9e6f23db7949bdbb7fa1921ebb1aaee3e35c9492c303 |
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font_02_sfnt_off00012d3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D3A | 4324 bytes |
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
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