MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The 'SE_FAKE_CAPTCHA' heuristic indicates the document presents a fake CAPTCHA to lure users into clicking links. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://jacksth.ru/strik?utm_term=oster+duraceramic+double+flip+waffle+maker+instructions PDF link annotation
- http://likujodofefa.22web.org/claudinho_e_buchecha.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414851/normal_60086fea6d131.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454968/normal_601dd1d7b1bb6.pdfIn PDF document text
- https://cdn.sqhk.co/vagizabibo/ciaiiij/48380596224.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4378856/normal_5feb94fe646e7.pdfIn PDF document text
- https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/nedazanaged.pdfIn PDF document text
- https://vuxidozeni.weebly.com/uploads/1/3/4/6/134669409/gogojen.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457572/normal_604b04f266276.pdfIn PDF document text
- https://cdn.sqhk.co/jawutuwek/WQELLsd/bikozonigugegoku.pdfIn PDF document text
- https://lefexaro.weebly.com/uploads/1/3/5/3/135324439/2354a022838e.pdfIn PDF document text
- https://zupevojug.weebly.com/uploads/1/3/0/7/130740492/furujekize.pdfIn PDF document text
- https://megewesaj.weebly.com/uploads/1/3/0/7/130738707/2a14b6103ec46.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/da3d1c04-22b2-472d-969e-b8855267d7ef/644321672.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5838371e-c959-45dc-9e3f-5b99ef6b0f55/zotulib.pdfIn PDF document text
- https://5e73d190-47a4-4ead-99bf-7e9069f06a16.filesusr.com/ugd/55cc32_cc18f269e0784a988db5b0957016ed81.pdf?index=trueIn PDF document text
- http://xadaxaxug.epizy.com/wumonerovusunimuk.pdfIn PDF document text
- http://vaxotofeguzika.rf.gd/22816647959.pdfIn PDF document text
- https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_6892f2dc6b90422db18e41b8d483e9eb.pdf?index=trueIn PDF document text
- http://sujimivotabis.rf.gd/what_are_the_best_books_for_13_year_olds.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9d85bfd4-991c-454c-881e-b22f92080e90/chapter_17_the_progressive_era_vocab.pdfIn PDF document text
- https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_66dcf558ad1c4d45bc0cd3c73d0f28c7.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ea43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA43 | 5624 bytes |
SHA-256: 6cc9e50c48ead16d327f694f57d2c20635f3fec7ab9f186851527600b52f082a |
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font_01_sfnt_off0000fd56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD56 | 11576 bytes |
SHA-256: 3cb5ab49db71455e023842d9e111ff6f3e3765978de977f90c744f8a46cc723d |
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