MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/123?utm_term=chughtai+lab+test+report+online'. Additional heuristics indicate the PDF is part of a link farm on disposable hosting, suggesting a phishing or scam campaign. While no scripts were explicitly extracted, the nature of the redirector and the ML classifier's high confidence score strongly suggest 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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://yafferge.ru/123?utm_term=chughtai+lab+test+report+online In PDF document text
- https://cdn-cms.f-static.net/uploads/4451927/normal_602e367064b91.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481990/normal_5ff019658c103.pdfIn PDF document text
- https://cdn.sqhk.co/kawonidoza/icdCyBS/sand_excavator_truck_driving_rescue_simulator_game_download.pdfIn PDF document text
- http://sunakijabe.sportsontheweb.net/is_season_4_of_tokyo_ghoul_on_hulu.pdfIn PDF document text
- http://poxumanavofeboz.scienceontheweb.net/guverixebetozisebev.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467036/normal_6029b03153503.pdfIn PDF document text
- http://watogoda.mypressonline.com/foninizomegaponarapojupen.pdfIn PDF document text
- http://zezasarasojid.mywebcommunity.org/75817026168.pdfIn PDF document text
- https://cdn.sqhk.co/genopeno/WihghcV/32199856380.pdfIn PDF document text
- http://gidilakapajuke.mywebcommunity.org/totazolepuvobum.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454163/normal_604792b4e3b57.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wibedubosateg/how_to_open_new_cannon_safe.pdfIn PDF document text
- https://s3.amazonaws.com/dedinavesute/91982263432.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/491af8ed-cab6-461e-a2ab-24346cee1c94/20510433386.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0c139922-9ee1-4d4f-ae81-93c7f3038f4b/47678856199.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/daa0ad1a-9149-471d-923f-36a9b0d2dfc3/xalasisonagogomofewatunaz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a7249566-c617-4a53-b9a6-2134741855dc/pattern_oriented_software_architecture_volume.pdfIn PDF document text
- https://s3.amazonaws.com/fekazudabo/socialisme_dfinition.pdfIn PDF document text
- https://s3.amazonaws.com/tarizirefevifab/xupawuwuduzogarageb.pdfIn PDF document text
- https://s3.amazonaws.com/jupudizadid/rb40_bridge_diode_datasheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1634c28-df59-438c-ad63-ccb6fa7a341e/what_is_a_real_world_example_of_newtons_first_law_of_motion.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f5fedc95-d609-4ea1-83c6-b2ac5538c78a/7278048565.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_off0000c622.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC622 | 5124 bytes |
SHA-256: 46aeee2442c7717e7d5ff2cd693128e1972031ac31d00827a6337f8cab9619f6 |
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font_01_sfnt_off0000d77d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD77D | 10016 bytes |
SHA-256: 56043c4911e6fbc1542673aa693a59a24c6e55c2e8ee300be9bc30d58f231436 |
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