MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
T1059.007 JavaScript
The sample was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating it's a phishing attempt using a fake CAPTCHA to lure users. The document body is heavily obfuscated, but the presence of numerous external URLs, some pointing to disposable hosting and redirectors, suggests an attempt to lead the user to malicious content or exploit kits. No scripts were extracted, but the overall structure and heuristics point towards a phishing lure designed to elicit user interaction.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://zajinet.ru/strik?utm_term=how+to+put+graco+contender+65+back+together PDF link annotation
- https://static.s123-cdn-static.com/uploads/4448744/normal_600804d0cd0be.pdfIn PDF document text
- http://beach-fruit.fun/mijixosudopidetu8pw6x.pdfIn PDF document text
- http://strahuemsya.info/mumojorawetisovevofekamo90jux.pdfIn PDF document text
- http://dezlice.ru/relgio_monitor_cardaco_samsungbq1ec.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383572/normal_604e7ac7bde74.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479715/normal_606952ae99014.pdfIn PDF document text
- http://gratoram.site/lekugokibofomegerinenabi682va.pdfIn PDF document text
- http://chestlune.online/dad_and_son_matching_clothes_ukgeyt1.pdfIn PDF document text
- http://dommasters.site/dilowuropiypaqx.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/e7dc2705-a2d7-4803-928f-b0a01942f386/2005_dodge_durango_transmission_problems.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/87161ad9-ad0d-4be0-aa96-9b9d52152442/29960959114.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/29f029ad-c976-46e3-b018-fc7956271d12/jolipufalerazatumaw.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/16148706293.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c506a8c3-7d43-410d-b2c6-03bbacf67970/75134159361.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c4a8745c-078c-4c49-880e-a867a5f21572/wezuberunojeze.pdfIn PDF document text
- https://s3.amazonaws.com/tipikaxe/telecharger_livre_pour_apprendre_francais.pdfIn PDF document text
- https://s3.amazonaws.com/divikufifir/graded_reading_worksheets.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b6036ff9-cd12-4bc0-a64a-e8ec06936f9a/25864839773.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_off00011f7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F7D | 6440 bytes |
SHA-256: 705377623a4c4344e02470fedf876d1ed6f0c7c0eac322cafb15afc9430d14bf |
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font_01_sfnt_off00012f71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F71 | 5660 bytes |
SHA-256: 2b65b3eb4e7960513194bffe3d41ceaa8f8b8934990a95ef6fb1dea26a388bd9 |
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font_02_sfnt_off000142ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142BA | 11556 bytes |
SHA-256: 6bd1f548ff01ff093d6e84900b229a24c699b248165110f67aa9e55a676fcd67 |
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