MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded URLs, with one specifically pointing to 'kuzutuzo.ru', indicating a likely phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests this is part of a network of disposable hosting sites used for malicious purposes. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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=decision+tree+example+problems+with+answers PDF link annotation
- https://cdn.sqhk.co/tifatuju/ig2hphe/6502474258.pdfIn PDF document text
- http://nemosixumeki.mypressonline.com/femileleguzukujugurut.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369302/normal_5fdcf0d0216c9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488581/normal_600c9013b95e6.pdfIn PDF document text
- https://cdn.sqhk.co/bokupajokim/f0YicPE/glow_air_hockey_online_apk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413465/normal_600e3dd3264eb.pdfIn PDF document text
- http://lapiwudoxavov.scienceontheweb.net/academic_writing_skills_2_teacher_manual.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460975/normal_5fe74d0b633bf.pdfIn PDF document text
- https://cdn.sqhk.co/tizudukokeni/Ucu7hfk/request_for_business_reference_letter_template.pdfIn PDF document text
- https://cdn.sqhk.co/sesexibanobu/emwLDof/hoops_pinball_machine_for_sale_ontario.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447912/normal_5fec30e790ecd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://df256b98-640c-444d-885a-8195c7360722.filesusr.com/ugd/40b9e6_9f41667eec9e4620baad9d950d53617f.pdf?index=trueIn PDF document text
- https://f77c8dad-41d7-4a8f-8d8d-c05149a3a236.filesusr.com/ugd/36d413_8fe012780fbd4761ae99407102bcb447.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zedilegol/tovinag.pdfIn PDF document text
- http://donijexufenu.onlinewebshop.net/mirovakoximexirobamil.pdfIn PDF document text
- https://144c9d4d-401b-437b-b89f-6a5816d7da47.filesusr.com/ugd/cd33f5_f477bce3e3cd41b9b7b4c0d5bffd8633.pdf?index=trueIn PDF document text
- https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_807badf5f67e4a6cb4cdae8c49987737.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sesijesule/file_b_ln_ngc.pdfIn PDF document text
- https://s3.amazonaws.com/tobito/minecraft_tokyo_disneyland_map_download.pdfIn PDF document text
- https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_0612822da8a441d6aa86324338198ebc.pdf?index=trueIn PDF document text
- https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_ece557a0b760439ba6409357f051ac70.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sowirutelevolur/age_of_empires_3_for_android.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011b05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B05 | 5472 bytes |
SHA-256: 6bbe28374d958456ca502d8099b9beb6cef6ad2c439c57d93834f920403b4a81 |
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font_01_sfnt_off00012d8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D8C | 11192 bytes |
SHA-256: a14b6d2e91862a38ddd55be3b88064cf0fedf03d684372774207db20f1132aa9 |
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