MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The sample is a PDF document that employs a social-engineering lure, instructing the user to install a browser update or plugin. This is a common tactic to trick users into executing malicious files or visiting phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, and numerous external URLs are present, likely serving as download or phishing destinations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 6
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://smidgel.ru/uplcv?utm_term=update+windows+21h1 PDF link annotation
- http://bpsstudio.hu/uploads/wuxilefadukivoseweripigu.pdfIn PDF document text
- https://sherwoodchamber.org/ckfinder/userfiles/files/fenajurewafagugurega.pdfIn PDF document text
- http://abwwilson.com/uploads/files/99434604342.pdfIn PDF document text
- https://questyme.com/userfiles/file/ramorag.pdfIn PDF document text
- https://mfdesign.hu/files/file/31752010392.pdfIn PDF document text
- http://okna-dvere-online.cz/media/upload/upload/file/85683459132.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/1ff1167dca5174a7a0e2310f555b8b48/rolafitexigubo.pdfIn PDF document text
- http://sieuthihatgiong.vn/webroot/img/files/25018150448.pdfIn PDF document text
- http://mawratanews.com/armedia/uploads/files/12827350886.pdfIn PDF document text
- https://francoisdaulte.com/ckfinder/userfiles/files/xorazapukelosi.pdfIn PDF document text
- https://zerling.eu/nico/images/files/65109518612.pdfIn PDF document text
- https://8cj2aja7-8mxb.com/contents/files/ridor.pdfIn PDF document text
- http://owop.challengersports.com/ckfinder/userfiles/files/jurebadidefagutewugabimo.pdfIn PDF document text
- http://polaryachts.com/res/wysiwyg/file/wijovaranusulutedalolak.pdfIn PDF document text
- http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/kabimowedafuwofotumejir.pdfIn PDF document text
- http://archiw.gbpopatowiec.pl/img/upload/files/65644526135.pdfIn PDF document text
- http://evohome.pl/userfiles/file/zigadugozizijoxifuxa.pdfIn PDF document text
- http://resumesfromabove.com/userfiles/file/guredupavaz.pdfIn PDF document text
- https://edu-mate.kr/_UploadFile/Images/file/posanekikidorejizerubiz.pdfIn PDF document text
- http://werder-ritter.de/UserFiles/File/zobejonaleb.pdfIn PDF document text
- https://ph2020.org/FCKeditor/file/jojusidunafuteg.pdfIn PDF document text
- https://thehouseconcert.com/ckfinder/userfiles/files/guxiret.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/1c8762e20c0126968ccc78f1c506f541/95118336893.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001584a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1584A | 18156 bytes |
SHA-256: 6f65f73946f40334a2f9fa44c874252b7a7b03943da9c3a8849553cba40e27ee |
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font_01_sfnt_off000186eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x186EB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00019f02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19F02 | 10608 bytes |
SHA-256: c65e6df00d40d4607abeaa0da589b5844b400022e4bd8e7df1dad5b71beeee3b |
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