MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of embedded JavaScript suggests it may be used to facilitate the redirection or exploit vulnerabilities.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://queure.ru/uplcv?utm_term=machines+a+courant+continu+exercices+corrig%C3%A9s+pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160900d94c1c4b---55847253481.pdf
- http://p-itos.net/admin/userfile/image/file/87990500246.pdf
- http://webinaris.org/ckfinder/userfiles/publics/files/74899789382.pdf
- http://salinahighschool1968.com/clients/3/33/33fcb9b832a528c934b1ac42c6b88a99/File/55305904560.pdf
- https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607168b522802---sesasenipoku.pdf
- http://misspacificus.com/clients/873634/File/25377133335.pdf
- https://vanchuyenduongsat.vn/upload/files/jakometejaguba.pdf
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/521ab58518e446a86adc40cc29706e8b/29877174019.pdf
- https://aravlicraft.com/cmsCart//upload/file/popupijumexuxu.pdf
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/c86bced08c5fa085eca635127b9cb05b/96866056562.pdf
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16102f8803c2f6---sizaji.pdf
- http://webatnet.de/ckfinder/userfiles/files/tatenapegesavufepubazukix.pdf
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/6cea0de0aa851cab160230f58c45c99e/67789468138.pdf
- http://tantos.jp/js/upload/files/bunitoremokefirafini.pdf
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160784054b3267---jabudesuwazuvijapobefivu.pdf
- http://ozanatalan.com/iboard/includes/userfiles/files/xizogijuj.pdf
- http://arcenevents.nl/site/upload/files/meredikiga.pdf
- https://oncetrabzon.com/resimler/files/94591587585.pdf
- http://htwy.com/upload/file/73606864308.pdf
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/0dr4ll2oj39bas2cgt8qbf8s6h/67439580208.pdf
- http://stigstudiotecnico.it/userfiles/files/4582407447.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/318080ee3551c5dbb5d65a36ce46baa0/dezesetukelonovasubeval.pdf
- http://adamlegal.com/userfiles/file/nozajuguludasovexigusenag.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_off0000d972.binfcb85911802e6402ecbd18fffa266587b7791b1c01fb1e2f228be94043df3b50 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD972 | 19416 bytes |
font_01_sfnt_off00010a3f.bin56e69690bb46ac707de873b6710998eb599765827433e4ab38add5cf42ce6979 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A3F | 11204 bytes |
font_02_sfnt_off000123fc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123FC | 16792 bytes |
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