MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a deliberate attempt to create a link farm on potentially malicious or compromised infrastructure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or directing users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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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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://philabc.ru/uplcv?utm_term=most+popular+fortnite+skins+2020 PDF link annotation
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/b311e977c17509cdd6e6103298acbe75/27945421797.pdfIn PDF document text
- http://www.gesas.it/media/mailinglist/file/wogopizomuti.pdfIn PDF document text
- http://tai-group.com/upload/files/79480795425.pdfIn PDF document text
- http://upservice.expert/admin/ckfinder/userfiles/files/rupujisovafakexib.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/5af5ae9abc1382a0af9e42c0c540638a/nojifulok.pdfIn PDF document text
- http://boldogelet.hu/media/pajedodagolupojodetopazi.pdfIn PDF document text
- http://riverhouse.at/pcms/content/file/15755700447.pdfIn PDF document text
- http://kmsenior.org/file/files/fidetope.pdfIn PDF document text
- https://kibledergisi.net/resimler/files/raxanopapuridividodeguj.pdfIn PDF document text
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/161328d8a4284a---96622103969.pdfIn PDF document text
- https://triosms.com/userfiles/file/jigekikafumibadanugovew.pdfIn PDF document text
- http://om-ar.com/userfiles/file/vozebidekabumevudu.pdfIn PDF document text
- http://lianbang123.com/uploads/files/202109090659553119.pdfIn PDF document text
- https://cobrawire.com/userfiles/files/webojomujin.pdfIn PDF document text
- https://playindiano1.in/ckfinder/userfiles/files/92003163960.pdfIn PDF document text
- https://smartmedia.ro/app/webroot/files/userfiles/files/metutugerunixukakefuxavo.pdfIn PDF document text
- https://jbdclothiers.net/emailer/userfiles/file/36753217126.pdfIn PDF document text
- https://sabresources.com/FCKuploads/file/sawojazipibojijibate.pdfIn PDF document text
- http://harnettcountyhba.com/userfiles/file/41736287659.pdfIn PDF document text
- http://355353.ru/userfiles/file/zegoxezabiwasomuxadulifab.pdfIn PDF document text
- https://stcc-sa.com/motakamel/Ups/files/95588289111.pdfIn PDF document text
- http://angel-conference.org/upload_fck/file/2021-9-11/20210911104805281018.pdfIn PDF document text
- http://webinaris.blog/ckfinder/userfiles/publics/files/14196716644.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b052.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB052 | 15140 bytes |
SHA-256: 4d53e3eb092bda641bb844ac716b9ad9a952e6c48cf93822ae720bd87873d20f |
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font_01_sfnt_off0000d651.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD651 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ee68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE68 | 10780 bytes |
SHA-256: 4a87bd353ea2cc7123d2462cf39553729dba790fc1d5ec40ab6b99cf9d1d77b6 |
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