MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file is identified as malicious by ML classifiers and ClamAV, with high-severity heuristics indicating suspicious links and external URIs. The document body, though heavily obfuscated, suggests a lure related to 'esl irregular past tense verbs list'. The primary malicious IOC is a link to 'http://securityofusersdevicesonline.site/15912199021medyk.pdf', which is likely a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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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Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LUREPDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
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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=esl+irregular+past+tense+verbs+list PDF link annotation
- http://securityofusersdevicesonline.site/15912199021medyk.pdfIn PDF document text
- http://rentline.pro/skyrim_best_load_orderuutu4.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/9e11cfc2-45a1-4f97-b534-0d75fec0ced9/14340723780.pdfIn PDF document text
- http://sovizaz.epizy.com/61519156210.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/42e28859-5278-410d-8db6-2d927ea17457/kitchenaid_food_processor_attachment.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/38cfe65d-3425-4705-bdf6-d46e7d6b9931/cultural_identity_and_cinematic_representation_stuart_hall.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dbd032e8-74e5-469a-85bf-f00d7365037d/merenipusive.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95db826f-6d96-42a0-a1c1-52c860144e11/remove_anode_rod_whirlpool_water_heater.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd221dbc-f5c7-4f84-8c8e-00c692a5656c/dell_c1765nfw_mfp_laser_printer_driver.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/68c757f3-6086-441b-981e-779990db5395/63824127350.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2fd7fac8-6c20-494b-bfbe-427172043be7/duvatitotokede.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5aa8ebca-9acf-4095-90b6-b79fb8b6bf52/shell_script_interview_questions_tutorialspoint.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a033099-7715-4c24-875f-a78b892ecb55/68958323670.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08a3e282-b656-4731-aca3-6e53a94a445f/danby_countertop_dishwasher_installation.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/23719e49-22e5-4402-9a95-dbcfab21aa60/sunbeam_electric_blanket_flashing_f.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4ebc7962-ab33-4132-9a7f-b61982e46f07/44155193160.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d35bad16-a156-4726-ae6c-1fa53df63629/tipos_de_ecuaciones_cuadrticas_ejemplos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f0359de-df22-4528-9683-f4d1148d78a9/technical_drawing_app_concepts.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a8c72578-6cb8-42b7-900b-81baa355809e/fuwebavotufunewikoxesikas.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/04f3a37e-8c63-45bd-b85d-de7bf8b81818/shell_scripting_tutorial.pdfIn PDF document text
- http://dupizorof.rf.gd/metaphysical_conceit_in_the_canonization.pdfIn PDF document text
- http://nimunofat.epizy.com/39373798102.pdfIn PDF document text
- http://tutalisog.rf.gd/daropemifigogisurenut.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_off0000f288.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF288 | 5144 bytes |
SHA-256: 2acc870bf3844be737d73d49064f5393e44e344b5d548e0a245a177c4a7ce2ee |
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font_01_sfnt_off00010420.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10420 | 11352 bytes |
SHA-256: e3aaf0b788347568a101e88e18a2c9e57e1e7a7f2d4a51b54d37be0b3065dfb9 |
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