MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, many of which point to link farms hosted on compromised websites. These links likely serve as a lure to download further malicious content or to phish for user credentials. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://gastrotest.co/ckfinder/userfiles/files/39968514654.pdf
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/a14d5827d57b983b48ab636818fe0dda/8958211142.pdf
- http://erbamedica.org/userfiles/files/ketojusebanav.pdf
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614086d19c3c7---67842359488.pdf
- http://noahmission.org/dataroom/file/pedulikulunumanoniru.pdf
- http://librojuridico.com/aym_images/files/gafekuxurufiwagoboxuf.pdf
- http://zhihepvb.com/upload/ckimg/files/202109061559077867.pdf
- https://ms01bet.net/contents/files/vumomebevapepokumivatukox.pdf
- http://trips-in.com/ckupload/files/winepojisoxiturokudo.pdf
- http://hdg-gmuend.de/userfiles/files/13546829603.pdf
- http://americasbestwingsbeltsville.com/uploads/files/nenuvenododem.pdf
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6c3311985---59494227866.pdf
- https://aljuboori.com/userfiles/files/95519159700.pdf
- http://ohxto.com/uploaded_files/userfiles/files/mugaxowuvomivuditax.pdf
- https://eliteplacementagency.com/uploads/files/97899462195.pdf
- http://kingsauto-bar.com/js/upload/files/murakatik.pdf
- https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/4nsgeaei0prsk3av67t81q3rc2/55542989928.pdf
- http://neoneofitou.com/ckfinder/userfiles/files/zumisefeposumajokeg.pdf
- http://happinessgown.com/upload/users/files/86688285453.pdf
- http://saveondealz.com/ckeditor/ckfinder/core/connector/php/uploads/files/73465654909.pdf
- http://niktid.ru/userfiles/file/gosedutenujomo.pdf
- http://giaexploring.it/userfiles/files/jetuja.pdf
- http://studioriboldi.eu/userfiles/files/22375004338.pdf
- http://tuzvedo.hu/elemek/file/pomujesagemagedoralidivuv.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=super+clone+app+download
- 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_off0000dbd8.bind39121578d1e3fe2c5b76a5c5303f363fe9d2e05f6e287225b82e1b1e5e52d9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBD8 | 10412 bytes |
font_01_sfnt_off0000f390.binc53d7cdc24597e0f1c846d464478fc7bde0983246ea500e238b9422f99f257ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF390 | 18180 bytes |
font_02_sfnt_off00012308.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12308 | 16792 bytes |
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