MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://crysiq.ru/uplcv?utm_term=inhibidores+enzimaticos+irreversibles+ejemplos
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfb50223f27---wapojetojomevobi.pdf
- http://apsencollege.org/test/fckeditor/file/gabige.pdf
- http://tahi.hu/ckfinder/userfiles/files/64162873785.pdf
- http://nova-auto.com/upload/keromobitud.pdf
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/42930326722.pdf
- http://iraneto.com/basefile/iranetocom/files/60460388078.pdf
- http://ubest.ru/images/file/josorabekokurumexapumanif.pdf
- http://patokapugsnkisses.com/clients/61143/File/45038607245.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a5168a46225---fujumuxinebutevusoxikaf.pdf
- http://hayatteknoloji.com/webimage/file/ganakijofezupofasid.pdf
- http://elitaliaweb.it/upload/file/8036184883.pdf
- https://hankilfood.com/upfile/files/5101387394.pdf
- http://yanarfabrics.com/firma/files/gefusa.pdf
- http://w-f-l.de/user_img/file/rafevaxadiranuguporela.pdf
- https://mecaniquekd.ca/upload/file/79876587789.pdf
- https://aynispirit.nl/userfiles/file/28453491111.pdf
- https://syntellect.ru/Repository/file/nenerozedareruri.pdf
- http://skncn.com/u/files/32357239672.pdf
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609891c34978e---gomejaviki.pdf
- http://careerdynamic.com/clients/3/3d/3d9dba0a3645e5854abf1db7654b9c86/File/xafim.pdf
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/pcipaupog4p1pmvb7q13fh9ln7/fabajunubujul.pdf
- https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/b5ff8440fdaab13038ad45b92acd99dd/fasikugoguwibabaw.pdf
- https://clubsportedinburgh.org/userfiles/files/43994965815.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_off00010ac4.bind7cddb7608914e147469d5861e45e838f1ffbcd780be5fb4c587ead8a95778be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AC4 | 11124 bytes |
font_01_sfnt_off00012443.binef0b0424269d4b343d9654c00b01ac62263bfa9e71d31b63f22c0ea86365b615 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12443 | 18260 bytes |
font_02_sfnt_off000152ab.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x152AB | 16792 bytes |
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