MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs, including suspicious domains like 'kuzutuzo.ru'. The presence of numerous embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggest an attempt to obscure malicious destinations or distribute phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 5
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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 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://kuzutuzo.ru/strik?utm_term=simple+molecular+structure+examples PDF link annotation
- https://cdn-cms.f-static.net/uploads/4457305/normal_6059d7fcc3b9d.pdfIn PDF document text
- http://medway24.com/zenogakolepifuzikolijeeyxvc.pdfIn PDF document text
- https://cdn.sqhk.co/xupotuferu/gjeZhgh/spider_solitaire_iocard.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369629/normal_6037c8b428ec1.pdfIn PDF document text
- http://trysoda.club/kenmore_elite_he4_gas_dryer_not_heatinguwasb.pdfIn PDF document text
- https://cdn.sqhk.co/gidulikegel/mjjQkgh/real_car_driving_simulator_mod_apk.pdfIn PDF document text
- https://cdn.sqhk.co/tajiwikiter/NrJNBgd/cupcake_jemma_recipes_vanilla_cupcake.pdfIn PDF document text
- https://cdn.sqhk.co/ginonunujiji/fijihbH/73074428332.pdfIn PDF document text
- https://cdn.sqhk.co/sojowidaz/cb7gdhi/learn_basic_chinese_language_online_free.pdfIn PDF document text
- http://alfa-quest.ru/281536316018eusx.pdfIn PDF document text
- https://cdn.sqhk.co/febenapox/C0gdVZi/pop_rock_musical_theatre_songs_male.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489033/normal_5fc99fda76a3c.pdfIn PDF document text
- http://nunopasatipimav.medianewsonline.com/fupuxurixamuwa.pdfIn PDF document text
- http://baramijotafexo.mypressonline.com/chapter_4_practice_test_chemistry.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421335/normal_6053b1da9da0e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380540/normal_6016a6558995a.pdfIn PDF document text
- http://p-kavkaza.ru/97221471353fl3d6.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://uploads.strikinglycdn.com/files/93cb39b6-4807-40ba-b37f-889f428fc73d/4_juli_1954_wunder_von_bern.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f7cd1ea6-eefa-46c8-9a00-7c48a83f2eda/p90_workout_schedule.pdfIn PDF document text
- http://tososite.onlinewebshop.net/gefabosiretawinarilukifo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f8e91ac-d57a-419b-83fd-2cca3054def2/james_baldwin_my_dungeon_shook_essay.pdfIn PDF document text
- http://dasobiviwadodaj.atwebpages.com/gagegosideza.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000efee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFEE | 5028 bytes |
SHA-256: 526a47abae0417904e2cd12b8fd79a3a058dc5187e7e24af520de095f2c0b70e |
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font_01_sfnt_off00010103.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10103 | 10504 bytes |
SHA-256: dd22fbd7e62ae894145321866a83c007ca63709d39410ec596f251a0eb14edbf |
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font_02_sfnt_off000124c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124C0 | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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