MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, including one pointing to 'kuzutuzo.ru', suggesting it acts as a link farm or redirector to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating a tactic to obscure the true destination of the links. No scripts were extracted, but the overall structure and URI findings point to a malicious intent to redirect users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 5
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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 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/wix?keyword=7th+grade+math+final+exam+common+core+pdf PDF link annotation
- https://cdn.sqhk.co/worijekegir/gieRjfj/83057155358.pdfIn PDF document text
- https://cdn.sqhk.co/tefozakozup/fATUmni/power_hover_mod_apk.pdfIn PDF document text
- http://japegemugivonen.22web.org/sony_dslr_a300_battery_charger.pdfIn PDF document text
- https://cdn.sqhk.co/jopubelo/ypgidgH/zodexidugadogubex.pdfIn PDF document text
- http://blablablacar.online/28941654472d6wi.pdfIn PDF document text
- https://cdn.sqhk.co/koxajavu/jgvuNhg/amazon_music_family_plan_cost_uk.pdfIn PDF document text
- http://delojenopow.66ghz.com/49990049146.pdfIn PDF document text
- https://cdn.sqhk.co/ferorigife/5iiCjfb/strike_back_elite_force_fps_unlimited_money.pdfIn PDF document text
- http://ritual-venki.online/sword_art_online_characters_names_and_pictures48j60.pdfIn PDF document text
- http://laxana.ru/ryzen_2600x_overclocking_guideq6h7b.pdfIn PDF document text
- http://216tilford.com/50369637597k23uj.pdfIn PDF document text
- http://usesol.xyz/79225565575p8l4n.pdfIn PDF document text
- http://umkatrade.ru/canon_vixia_hf_g4059ak3.pdfIn PDF document text
- https://cdn.sqhk.co/puwipaneke/BFAgcco/datotetuxagofibo.pdfIn PDF document text
- https://cdn.sqhk.co/foxoxaze/C6jiPja/lemowavizewebibugapixaxe.pdfIn PDF document text
- http://presalle.xyz/nemelegojepz7ycs.pdfIn PDF document text
- http://kotowis.22web.org/62306679633.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/a64196b9-6b2d-4aec-903a-8f086193313f/is_pensacola_a_spring_break_destination.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6b0ab534-1fce-455f-95e2-7c2fc85f67bb/38633032957.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f9d2dc9-f89e-48c0-ad0d-90fed8c9afb5/the_nature_of_code_by_daniel_shiffman.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c61daec1-db1f-4c1f-8584-b99415d54574/15568615238.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4130dcaf-7b2a-4a41-8f9e-3410ca534a61/gopro_hero_3_plus_battery_bacpac.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000f22b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF22B | 6744 bytes |
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b |
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font_01_sfnt_off00010312.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10312 | 5444 bytes |
SHA-256: 1b641e71ae20e6b9277e9827c05817f22ddc6451c5f0f5c4bebc74bfabdaa2eb |
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font_02_sfnt_off00011582.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11582 | 11304 bytes |
SHA-256: 4a39eb9fed275fed8e4be36012c1789f5d297df9d4f169e716e0c6a109b93fca |
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