MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm hosted on disposable domains. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are designed to deceive users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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=minecraft+castle+wall+ideas
- http://lg-palette.com/upload/files/xoripugifaduseb.pdf
- https://www.edmcenter.xyz/ckfinder/userfiles/files/nasolofilarosidebiw.pdf
- http://sherwoodchambergolf.com/ckfinder/userfiles/files/soposarugidilinepiwenu.pdf
- http://xinyuemu.net/assets/202109/files/20210902183305643279.pdf
- http://recko.ru/ckfinder/userfiles/files/51988012347.pdf
- http://lactopad.com/uploads/files/welugobegeso.pdf
- https://egyptsuntours.com/userfiles/files/gogenewamasukenobiw.pdf
- https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/c2a2bd5c7a58d8a3e447c66745f47594/jefelisunagezo.pdf
- https://www.delaneyllc.com/ckfinder/userfiles/files/40192230336.pdf
- http://master-br.ru/img/file/waduzupedaxefasunovux.pdf
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/923a64f1a7e5650ff080eb4ab0b8b425/58393067504.pdf
- https://soenen-pneus.com/upload/file/58981014967.pdf
- https://marblobaths.com/app/webroot/img/files/77066025978.pdf
- https://ataru.site/js/ckfinder/userfiles/files/nezeru.pdf
- http://snieznik.pl/userfiles/file/gukedov.pdf
- http://mobilesamara.com/img/files/file/79932819677.pdf
- https://lordoptika.hu/files/files/23030652343.pdf
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/161404d7233925---49102412982.pdf
- https://iphone-odklep.si/vsebina/totelebofejejotiwax.pdf
- https://stonebuild.bg/f/uploads/files/30997953418.pdf
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/46g1vtontb3u66qe3vvn72judb/21619318745.pdf
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613163129c4fa---81920808371.pdf
- http://80tner.netsociality.com/upload/files/narekemadavuwezesu.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d2b8.bin411925b0bc333300f65f26b4165ef86ffacb9d6e039c7c7bcd84e5ecf4e835d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2B8 | 17480 bytes |
font_01_sfnt_off0000ffc5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFC5 | 16792 bytes |
font_02_sfnt_off000117dc.bind63a84ec2749a49dce50da6fed274932689e1e00e9393ddd24f93c339a90a40e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117DC | 10428 bytes |
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