MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting vulnerabilities or delivering malicious content. Heuristics indicate it functions as a link farm pointing to compromised WordPress upload storage, suggesting it aims to redirect users to malicious sites. The ML classifier and ClamAV detection strongly support its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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 http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ec506e3b70e---simomodisiboragiv.pdf In PDF document text
- https://aawyx.com/sites/default/imageuser/file/62990009787.pdfIn PDF document text
- http://paitoonbox.com/userfiles/files/50917575938.pdfIn PDF document text
- http://easternsheep.by/app/upload/file/48234775230.pdfIn PDF document text
- https://iuoshili.com/upload/users/files/2036113609.pdfIn PDF document text
- https://amitadevnani.com/userfiles/file/mumexokofujukezurudemop.pdfIn PDF document text
- https://hsse.cl/files/45115747572.pdfIn PDF document text
- http://jacksonreunion.org/clients/71346/File/29490686261.pdfIn PDF document text
- https://fivetc.vn/uploads/files/vawuvidupizerip.pdfIn PDF document text
- http://loaamtran.vn/files/usersfiles/files/23433501814.pdfIn PDF document text
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160767fbfc0ee8---84418192146.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/d49d1aa6130578c7f94454b1a5119279/ruzepufiwekez.pdfIn PDF document text
- http://gekon.net/userfiles/file/rozodoliju.pdfIn PDF document text
- http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/bulukokojevepulebadanep.pdfIn PDF document text
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/vrrdc27i62c9n9i9ov0sgpjq3h/xejuzaxoke.pdfIn PDF document text
- http://mundori.com/js/ckfinder/userfiles/files/7394040442.pdfIn PDF document text
- http://richmediahouse.com/admin/uploads/file/diwuwujegigemur.pdfIn PDF document text
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/45ic1385u2tegal4j0f72iok15/mejov.pdfIn PDF document text
- http://alltechsro.cz/files/7016476259.pdfIn PDF document text
- https://nodka.eu/ckeditor/ckfinder/userfiles/files/mubaso.pdfIn PDF document text
- http://anaminfo.com/attachfile/file/durulolalak.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a99e5ce89e7---kigitisexikuvipovukop.pdfIn PDF document text
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16098a61eefdec---91494756000.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/fa591ecbc10bac1a24327c3f1a6145e1/23468986648.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=mass+in+grams+of+carbon+dioxidePDF link annotation
- 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_off0000cef6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEF6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e70d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE70D | 10908 bytes |
SHA-256: 8196a40ffe728c3dee414583045539c70a1e4de949907c4171edb70e295845b8 |
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font_02_sfnt_off00010014.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10014 | 16868 bytes |
SHA-256: d3d2e69e82c7a01d6f492ae136bd26178327db200510513d59863aac3cb3eb4c |
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