MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' containing 30 external PDF links. The primary URL, 'https://jacksth.ru/wix?keyword=compound+complex+sentences+worksheet+pdf+with+answers', appears to be a lure for search engine optimization. ClamAV detected the file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0', indicating a phishing or trojanized PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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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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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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://jacksth.ru/wix?keyword=compound+complex+sentences+worksheet+pdf+with+answers
- https://cdn.sqhk.co/letarezetap/qCFbfIF/free_funeral_program_brochure_psd_template.pdf
- https://cdn.sqhk.co/difanemifal/hbiC1gg/infection_causes_mouth.pdf
- http://faxozulakevosos.iblogger.org/burnham_on_crouch_primary_school_ofsted_report.pdf
- https://cdn.sqhk.co/xovatapegil/XNP8Lw5/bouncy_castle_fips.pdf
- https://cdn.sqhk.co/wisaputal/JIicjhi/printer_3d_model_obj_free.pdf
- https://cdn.sqhk.co/kanereneb/gj0ifc8/3361562396.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/sumesawoxajew/the_best_ice_cream_makers_for_sale.pdf
- https://s3.amazonaws.com/xepululejiwof/employment_standards_act_worksheet.pdf
- https://uploads.strikinglycdn.com/files/1a8dc52d-1289-4147-a5cb-125e531624e0/can_you_use_a_bundt_pan_for_any_cake.pdf
- https://4900ecec-7ac1-411c-be2c-b077674085c8.filesusr.com/ugd/493135_9ea3733aec7c431f9c6ed17347b0cf32.pdf?index=true
- https://s3.amazonaws.com/zafijukopa/verevefoduzusamufurog.pdf
- https://636e06b3-920c-4898-b827-ef778bbbc101.filesusr.com/ugd/40512e_906f6d79c050426da322435579b7ba32.pdf?index=true
- https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_858f71f5cb6c4c8b88a81385e91cd530.pdf?index=true
- https://s3.amazonaws.com/jovekus/fojerufanufawikuj.pdf
- http://ripofosefalub.rf.gd/annual_report_design.pdf
- https://uploads.strikinglycdn.com/files/2093d398-95a4-4a59-8f51-8b86954c9751/xugib.pdf
- https://eee7329a-c4d5-4508-a8fd-a8ba515f7d9f.filesusr.com/ugd/5ed802_394bdd7cbe234c049329b914654e95e5.pdf?index=true
- https://uploads.strikinglycdn.com/files/b8fcca9c-6196-42a0-8fb5-0d8f1168fc9d/pejananevefodovupotixuvej.pdf
- https://s3.amazonaws.com/remuv/lowemurub.pdf
- https://s3.amazonaws.com/fejenijovekozu/how_to_build_defence_platform_stellaris.pdf
- https://s3.amazonaws.com/muvevanepen/35024400561.pdf
- https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_57e83bf8224040afa5e6c5e5c19146f3.pdf?index=true
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e380.bin0462547c81ba90b0055e163771613d8b6ff3601915dded58032b733521b33f22 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE380 | 5524 bytes |
font_01_sfnt_off0000f62f.bin8712fbbb16911d59cddf884173b34337a5473e41ef2e14c54504edfb23f77d60 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF62F | 10608 bytes |
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