MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many pointing to disposable hosting, indicative of a link farm or SEO poisoning attempt. ClamAV and ML classifiers identified this as a phishing or malicious PDF. The embedded URLs suggest an attempt to redirect users to potentially malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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=cardinal+utility+analysis+pdf PDF link annotation
- https://cdn.sqhk.co/peretudiwi/hd5aahb/giwagokiroxuvilup.pdfIn PDF document text
- https://cdn.sqhk.co/nogedapuvul/JhgizJ8/90586828136.pdfIn PDF document text
- https://cdn.sqhk.co/sadudolamom/aijf5ue/big_sean_control_audiomack.pdfIn PDF document text
- http://mopafebofin.22web.org/narupedalatot.pdfIn PDF document text
- https://cdn.sqhk.co/bodevoposuji/icjggf5/koloribefoleresuxam.pdfIn PDF document text
- http://auth02mobility.com/xizage4ybwm.pdfIn PDF document text
- http://bawoputameded.iblogger.org/3831258412.pdfIn PDF document text
- http://nusowutevu.getenjoyment.net/ziresetupalaneg.pdfIn PDF document text
- http://bigops.fun/85955462286y675y.pdfIn PDF document text
- http://xirijapip.mypressonline.com/antidiabetic_activity_of_plants.pdfIn PDF document text
- https://cdn.sqhk.co/kebabefepu/ibifUyc/financial_literacy_certification_test_answers_2018.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
- http://vowojuxibaxo.myartsonline.com/bolt_sizes_chart.pdfIn PDF document text
- http://nixomirorubu.myartsonline.com/51454531686.pdfIn PDF document text
- https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_2b2cfd7536a54543b1370573900c6976.pdf?index=trueIn PDF document text
- http://punegejofuj.epizy.com/phonic_worksheets_for_esl_students.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4ff0f32-a5b5-48bc-a809-c40c7babe6b3/43509793281.pdfIn PDF document text
- http://zeraginijumeje.epizy.com/kocostar_slice_mask_sheet_tomato.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a266d3e2-6510-4901-9d36-40dc174dc0cd/resumen_del_libro_desde_el_jardin_por_capitulos.pdfIn PDF document text
- https://63a0a607-6d1b-4b95-a813-f1b07cabc719.filesusr.com/ugd/ad56f2_3a7076f1d4dd45cdad6ed47a571ded9f.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00013c83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C83 | 4812 bytes |
SHA-256: 91a865bae2701134264050551ee225cb25741b077c161c8d95ec7fa57e53a4a5 |
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font_01_sfnt_off00014ceb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CEB | 11792 bytes |
SHA-256: 43e154cde6262beb52baf6bdbcffa23ae6ebcf9428a152d2dc8502c4725352ad |
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font_02_sfnt_off000174f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x174F9 | 16172 bytes |
SHA-256: 184364760ff502c22ea8c7776335100173eb9652a4c7b89316be262b31fb3d4e |
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font_03_sfnt_off00018a15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18A15 | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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