MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URIs, indicating it is designed to interact with external resources. The 'Browser extension / update installation lure' heuristic strongly suggests a social engineering attempt to trick the user into downloading and executing further malicious content. The ML classifier and ClamAV detection further support its malicious nature, likely as a downloader or phishing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://zenit-npk.ru/files/file/gibujenarodanuxibufowemix.pdf In PDF document text
- http://123podkrovie.sk/editor_uploads/files/rulodutosa.pdfIn PDF document text
- http://extrastyle.ee/ckfinder/userfiles/files/rinibiwidi.pdfIn PDF document text
- http://dansecyr.ca/pdf/file/wakeburetusevajofivasipum.pdfIn PDF document text
- https://biothiennam.com/media/ftp/file/kolebapisupegun.pdfIn PDF document text
- http://vitalchurchesinstitute.com/files/file/35703859580.pdfIn PDF document text
- http://inventory-acepipe.com/images/uploads/files/dalozoduzadosobo.pdfIn PDF document text
- https://ausztriasi.spawellness.hu/upload/hirlevel/files/628536584.pdfIn PDF document text
- https://kiptep.ru/file/97415079099.pdfIn PDF document text
- http://h-n-s.net/userfiles/file/bikazeb.pdfIn PDF document text
- http://oecschool.com/userfiles/file/sodusuxare.pdfIn PDF document text
- https://alicantea.centralcms.cloud/galeria/files/59913311715.pdfIn PDF document text
- https://flour.co.uk/ckfinder/userfiles/files/madovekexemav.pdfIn PDF document text
- https://anpheatingandac.com/nbloom/fckuploads/file/26528807334.pdfIn PDF document text
- http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/mamifudijuzokoga.pdfIn PDF document text
- http://nuraski.pl/wsg/userfiles/68872890969.pdfIn PDF document text
- http://lukinserv.hu/file/fuvozegab.pdfIn PDF document text
- http://baldonimarcostudio.eu/userfiles/files/14565735659.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130cf6cb1c6c---rogodubolebadimaruresas.pdfIn PDF document text
- http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/93655708659.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/b7fd14c303c6d9a584471e1dd62749ee/57026117017.pdfIn PDF document text
- https://essuances.com/ckfinder/userfiles/files/72193740121.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=chrome+download+pending+problemPDF link annotation
- 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_off0000dc0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC0C | 10828 bytes |
SHA-256: 7697c94c4c3aa621e39d879431f034f3113d81e6bc757cd1f9431f5b31e05084 |
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font_01_sfnt_off0000f45f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF45F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010c71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C71 | 17936 bytes |
SHA-256: 879fe30573b6bc684f8befb86d8d1593bdc84eae180a7e3ba1b917fdf839463b |
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