MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and a large number of external URIs, many of which point to disposable hosting or compromised sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://chcial.ru/uplcv?utm_term=modern+chess+openings+pdf PDF link annotation
- http://joyandwowbook.com/upload/file/vugokiwuwofika.pdfIn PDF document text
- http://motolargo.pl/userfiles/file/janizogivavun.pdfIn PDF document text
- http://wirtrauenuns.ch/images/file/jeseruxabo.pdfIn PDF document text
- https://suativisamsungtaihanoi.net/upload/files/18367306326.pdfIn PDF document text
- https://www.paseppe.gr/ckfinder/userfiles/files/35604739607.pdfIn PDF document text
- http://showpelec.com/data/file/20210905_195302_456.pdfIn PDF document text
- https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/14385372457.pdfIn PDF document text
- http://blccy.com/userfiles/files/xagojabevufujaletofojoxab.pdfIn PDF document text
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133c9bca36ba---18966972115.pdfIn PDF document text
- http://samtekelektrik.com/files/40387115739.pdfIn PDF document text
- http://www.jindatunnel.com/up_files/file/xokirovu.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/gomalep.pdfIn PDF document text
- http://wxdyzs.com/userfiles/files/2225435478.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/67e5e7dfe9b693e4350d699cd7fdab18/16178894791.pdfIn PDF document text
- https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/76144046672.pdfIn PDF document text
- http://i-harmonics.com/upload/files/rituzaxapenebadif.pdfIn PDF document text
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139947713242---zerojilo.pdfIn PDF document text
- http://www.ciesol.es/ckfinder/userfiles/files/tuseravuxigapojuxer.pdfIn PDF document text
- http://ux02.wadhost.com/js/ckfinder/userfiles/files/72127784083.pdfIn PDF document text
- http://scpt.it/userfiles/files/gugitonafabiniwuxawe.pdfIn PDF document text
- http://ewhamd.net/upFiles/ckeditor/files/89045346477.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_off0000e6f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6F2 | 10584 bytes |
SHA-256: 7cb4e4053b7aa7218335e3678ad3fb858f4958ddecd631640df2c1a296c17ae0 |
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font_01_sfnt_off0000fec1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEC1 | 17084 bytes |
SHA-256: 53c393ebc834b083dc1dc6665f34ee245d61fc139ec541ccbdb5135837ac54ac |
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font_02_sfnt_off00012b3e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B3E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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