MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves luring users through these links, likely for credential harvesting or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9848
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://inwebjor.ru/uplcv?utm_term=the+science+of+nutrition+2nd+edition+pdf
- http://webinaris.biz/ckfinder/userfiles/publics/files/57426406897.pdf
- http://color-gateway.com/userfiles/file/dezoluzir.pdf
- https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/da1f1f95df9dea2dcc7ec3093fc868b1/13575801661.pdf
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f61d1d176---97610856274.pdf
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/9290518060744c47466a1bcb0b63b6ef/4173758995.pdf
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/7a74f23b9c420f149ea2dc2c5f7786be/purila.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609efab239b76---79133236381.pdf
- https://tmtteks.com/files/19065922720.pdf
- http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f58696a79---33430515758.pdf
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b725798e7cc---46007042654.pdf
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b2d89f177---25656508839.pdf
- http://ks4073.com/file_media/file_image/file/tuxuruxowisabotebugadozej.pdf
- http://chouchoudauphongongtay.com/upload/ck/files/21966619738.pdf
- http://volvo-cars.jp/js/upload/files/lusekitoripalabujenozok.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072210560f77---75048992469.pdf
- https://detmers-kontejner.hr/files/82142540145.pdf
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a17fcaab5---80884026999.pdf
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/93dfa462199d8178cf4870bfea97d872/55902213875.pdf
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/21a1dd1034c3400feda741e432c6bd58/wotame.pdf
- https://debcopharma.com/userfiles/file/46908246954.pdf
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ffe958ac86---57127987530.pdf
- https://bloomeng.com/uploads/54479481341.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd3eccd984---15670564076.pdf
- http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fbe7088abe---sijasewo.pdf
- https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/1bacd030076746672a231d8c728f9938/25106657914.pdf
- http://camionespanamericana.com/userfiles/file/zoxobujotogewaxexe.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_off0000ebe4.binae20e771a7592ba400c53887546816c4025ad6a10e5fbc2372caaba4990a217d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBE4 | 17544 bytes |
font_01_sfnt_off00011a08.binfdccb88d99cb73261d2a67560589fdf08b07dd95c953135e0067cbd4ea460466 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A08 | 10692 bytes |
font_02_sfnt_off00013293.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13293 | 16792 bytes |
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