MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains embedded JavaScript, which is often used to exploit PDF vulnerabilities or redirect users. The PDF also features a large number of external links, many pointing to compromised websites or disposable hosting, indicating a phishing or malware distribution attempt. The presence of embedded JavaScript and numerous external links strongly suggests an intent to download and execute further malicious content or redirect the user to a phishing site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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://coretry.ru/uplcv?utm_term=judicial+determination+meaning
- https://www.theoakshealthcare.com/my_content/js/ckfinder/userfiles/files/badaboligubo.pdf
- http://k3projekt.pl/uploads/userfiles/files/724620189.pdf
- https://tekmaker.com/upload/files/56603363202.pdf
- http://richardchong.com/userfiles/files/wanodevefipufas.pdf
- http://enricobarraco.com/files/15060032364.pdf
- http://mirgalosh.moscowfashion.net/content/xuploadimages/file/jidejuropidun.pdf
- http://dija.lv/public/userfiles/file/kizuveguzewuzuboj.pdf
- http://leton.pl/userfiles/file/82959232698.pdf
- http://suamayin.biz/userfiles/file/vutitatisi.pdf
- http://directopinion.biz/uploads/FCK_files/file/viwolonatanisowotoso.pdf
- http://www.evisiontiendaonline.com/ckfinder/userfiles/files/lujenipisenuwewelikilade.pdf
- http://przedszkolenisko.pl/userfiles/file/pujosevol.pdf
- http://suliaok.com/v15/Upload/file/202199145419080.pdf
- https://www.zolmedis.lt/ckfinder/userfiles/files/19910103901.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f27c0339c5---zubezinavuxopo.pdf
- http://ainut.fi/userfiles/file/zefidomitew.pdf
- http://fencefactoryny.com/userfiles/file/gosuropimurirurijol.pdf
- https://terrebleue.org/userfiles/file/708257072.pdf
- http://rld-carbon.com/file/77022065896.pdf
- http://riph.pl/userfiles/file/25687278228.pdf
- https://cuichi177.com/uploads/files/202109160757162298.pdf
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153079e745a2---zowatijodu.pdf
- http://www.farmaciavictoriayjmleon.com/userfiles/files/39421172780.pdf
- http://vtaky.sk/media/file/dofedezab.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614bb25e26b14---26156536021.pdf
- https://mgs-on-track.com/uploads/misc/files/sodulisovexaxumobuvozugag.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_off0000b4de.bin43a13cedbadd9512b1441f9896fd8b4c7c7a7b8206a9cfe17bbc67a63090587a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4DE | 10636 bytes |
font_01_sfnt_off0000ccfa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCFA | 16792 bytes |
font_02_sfnt_off0000e50c.bina94b71dbd97895f5bdcff112e707072032fedabcaf2d7e7c916378d37fe867e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE50C | 14608 bytes |
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