MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and a link farm. The heuristics indicate that the PDF links to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://clubkdo.fr/img/pics/files/55429757205.pdf In PDF document text
- https://novitas.ro/files/vebuvijenifewovev.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/161417596c5c0f---lidixesix.pdfIn PDF document text
- http://stroisvias.ru/userfiles/file/59982452694.pdfIn PDF document text
- http://soloparamideco.com/js/new/fckeditor/userfiles/file/wutopuba.pdfIn PDF document text
- https://www.idd.no/ckfinder/userfiles/files/tixolotabonena.pdfIn PDF document text
- https://allmassage.net/upload/file/20210909201514.pdfIn PDF document text
- http://indecomavo.pl/userimg/inc/nujar.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/40896bcd1e14d7f4915441b401994bd1/lipabibumomudubusid.pdfIn PDF document text
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/a3ab7f5e4b532160468a78c17fc7a7a9/2899086982.pdfIn PDF document text
- http://marchmont.ru/imgs/file/33122965893.pdfIn PDF document text
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc2a678f87---62822329164.pdfIn PDF document text
- http://brenderup.ro/mm/file/50910347043.pdfIn PDF document text
- http://rockefellersgold.hu/editor_up/34047033759.pdfIn PDF document text
- https://factorysales.com/userfiles/files/64675809537.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613483320d7a3---12652739841.pdfIn PDF document text
- http://ketnoikienthuc.com/upload/files/49184800696.pdfIn PDF document text
- http://northmarking.com/userfiles/files/moxib.pdfIn PDF document text
- http://ersatzmonitor.de/userfiles/file/vewasuroderatemobavowudut.pdfIn PDF document text
- http://daiduongmetal.com/uploads/ckfinder/files/87832520630.pdfIn PDF document text
- http://geodavidepini.it/userfiles/files/19342168499.pdfIn PDF document text
- http://mecaniquekd.ca/upload/file/xixidajokewukamonotitupar.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=android+video+game+appsPDF link annotation
- 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_off0000e03f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f851.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF851 | 17944 bytes |
SHA-256: ed0bb09b450bfb2fb7f2ba0e714f8c7706dbbfa44f259992c547b289468df3bf |
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font_02_sfnt_off00012725.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12725 | 10636 bytes |
SHA-256: ad9f856d4bd5e4a48e37e33349e638c1c376d4773b1c2076cdfbac66cfb0c673 |
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