MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external URIs, many pointing to compromised CMS uploads and disposable hosting, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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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=chapter+3+thesis+sample+qualitative+pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160825d3d71ba0---10749288434.pdf
- http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/bufusomajuvetigiwepup.pdf
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/nq30d20lu2skdi2ksl8h9qe57r/gaginorusilereninagemetob.pdf
- https://tybistanbul.org/resimler/files/bopijadowuv.pdf
- https://sibiucuratenie.ro/fckeditor/userfiles/file/vakizovurususorenida.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/01e29b0ce9537668322b3ac8d4e502e5/buxowapuw.pdf
- https://sluganarodu.org/userfiles/files/71595674862.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/21ad315d37f946701fa217640ebc37d0/kematuvogu.pdf
- http://otvorene-srdce.sk/userfiles/file/51459762601.pdf
- http://salkim.com/userfiles/file/5140130878.pdf
- https://davaocarrental.com/images/file/25616988798.pdf
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16095036454201---nijegiles.pdf
- https://peiitw.com/Upload/ckeditor/files/wetojikanokaxalafuz.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608bfea4688eb---fudegefoj.pdf
- http://pincailight.com/zk/UploadFile/file/2021061522004673499.pdf
- http://eschool365.in/js/admin/uploadfiles/file/5925187575.pdf
- http://safetyassessmentsolutions.co.uk/ckfinder/userfiles/files/nogujupozatoruwoluxozapaf.pdf
- http://czpohledavky.cz/userfiles/files/58798084724.pdf
- https://lamaisonducoeur.ca/upload/editor/file/vagobo.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160816200782b1---54933030786.pdf
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbce4e49fb---57308377115.pdf
- http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d87a919290---81798068004.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_off0000def7.bin787432108ad3e6f30b4d2af5b72864f0d5c1ce889b36d5745a70b1dbb703efbb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEF7 | 11052 bytes |
font_01_sfnt_off0000f891.bin2044ef935d8bd881c3fcd60de42034202c7a0ba775006c229b4ae86b81ac8d7b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF891 | 18480 bytes |
font_02_sfnt_off00012852.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12852 | 16792 bytes |
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