MALICIOUS
156
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 numerous external URIs pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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://medvor.ru/uplcv?utm_term=a+streetcar+named+desire+simpsons
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ae128b9a155---8320427160.pdf
- http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccb40c74a4---80437728741.pdf
- http://111-orte.de/testarea/cwsCMSlight/media/files/jojabufurejeta.pdf
- https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/7035a5e30be1770161ce41399872d20e/fobeguzexagalogiwev.pdf
- https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/nrn1gg25dmtmok3ula5moj7blt/menexuj.pdf
- http://alt-1c.ru/userfiles/file/83541968555.pdf
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a532075ab46---sufufozuzezidojuvev.pdf
- http://musthighschool.mn/ckfinder/userfiles/files/migizigajegat.pdf
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/e37e5290f2abc3ff82378a3c7d63f863/86428243374.pdf
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/d164408cc7c5ebe43384801b553aad10/morujuwajukawa.pdf
- http://www.emailposte.com/pictures/fosof.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/3cqc7bji0g599g9qe7thkvs8c4/viranogatonalatavonasena.pdf
- http://fhs76reunion.com/clients/0/00/009202203981f132fd14d012a57c0fe5/File/rapaserotesiwevodavazon.pdf
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/d1b3e9d7ce6ae941e4353646f56f9cd1/62225989252.pdf
- https://midasspa.com/ckfinder/userfiles/files/26850527202.pdf
- https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/18202db2784d3f99c2c84c25efb07680/jafuxotanu.pdf
- https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/b89f23a707865476f90600796fbd55a9/nekeded.pdf
- http://grupposcorcia.it/userfiles/files/nipetuwewaro.pdf
- https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/c655927de5d54f479655cc24407ec1fe/25689359943.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b01607e3c---10215192664.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0510357535---17440290429.pdf
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a91b7f9e474---fuvogovisu.pdf
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/a4c4d2e8c85ac8bf1203d8fdc84b974b/guwelifixip.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_off000101d3.binef3e6d84fda1d65a149d083d2f64d9ccc8abc7fdca7a883a9637efe23230c868 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101D3 | 16924 bytes |
font_01_sfnt_off00012e11.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E11 | 16792 bytes |
font_02_sfnt_off00014628.binc80dd8135f79b77933cd8657d6d62bc1b60879ab03a39c783a08f4352b27a898 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14628 | 10608 bytes |
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