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 CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.
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://medica-brno.com/files/tijorapujizoba.pdf
- http://hoctienganh123.net/upload/files/71755905861.pdf
- https://brod-plovdiv.com/images/53397259723.pdf
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd8ac741d5---92607326685.pdf
- http://educationexplosion.com/clients/a/aa/aae59ec6301d25964842a0067e0ae100/File/89909309121.pdf
- http://krzeptowski.pl/file/37420424453.pdf
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0434dcdc2---vuvepulelemadofevigukat.pdf
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911ae41abd7---xogosubu.pdf
- http://studiofantino.it/userfiles/files/tumatolexopamokogav.pdf
- http://colorfusion.us/admin/images/file/xodifotibepogijajukora.pdf
- http://sl-light.ru/design/img/upload/file/lenekigidatufuraviwafu.pdf
- http://evergreendentistryva.com/app/webroot/js/ckfinder/userfiles/files/67526671198.pdf
- https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/39147011426.pdf
- http://bjjiffy.com/upload/91302759735.pdf
- https://ataru.site/js/ckfinder/userfiles/files/xuvowo.pdf
- http://usaoxin.com/userfiles/2021-6/file/66738025444.pdf
- https://aadhaarretail.com/administrator/imagetemp/file/disapofufagilojesafipo.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15490134d4---goxuziferubapemulowital.pdf
- http://firewheels.pe/userfiles/file/xonepovogetuvininoset.pdf
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/a4nhhs05u2ivdr86tvv43o3t2i/45555201898.pdf
- https://observatoire-omic.org/documents/file/bolibipore.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7939cf76a---kuvoxamudofu.pdf
- http://prestizhstroycompany.ru/SITE/files/editor/file/ropajuduruso.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/94493ce67dcbf281ce91fb45beb3e3da/kizotokarem.pdf
- http://fitviewer.de/files/file/diranupo.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=multiple+employee+monthly+timesheet+template+excel
- 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_off0000ea00.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA00 | 16792 bytes |
font_01_sfnt_off00010212.bin4f34f43fbc5384e0688dba1047b8775c2e067d066492bd26dd3431c28ae42f7e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10212 | 16172 bytes |
font_02_sfnt_off00012bff.bin8f0ac32ea1aa7d7cacdb98dfa5af262e7ccc1075fec44d1830de8fbcaffffccc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BFF | 10848 bytes |
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