MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file detected by ClamAV as a phishing trojan. It contains embedded JavaScript and a significant number of links pointing to other PDF files hosted on compromised websites, suggesting a link farm designed to distribute malware or conduct phishing. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://pixomot.ru/uplcv?utm_term=stuff+that+starts+with+o PDF link annotation
- http://bamor.org/userfiles/file/pogibadavuxiwozid.pdfIn PDF document text
- https://gulfb2b.com/userfiles/file/9312298600.pdfIn PDF document text
- http://theeultimatenetworker.com/ckfinder/userfiles/files/zijaxagipolopuma.pdfIn PDF document text
- https://inprovituruguay.com/ckfinder/userfiles/files/60964969534.pdfIn PDF document text
- http://engineersclasses4competition.com/files/others/16570301520.pdfIn PDF document text
- http://lyzph.com/userfiles/file/Fl202109092327524953.pdfIn PDF document text
- https://agriplan-rs.com/dados/ckfinder/files/rofulepuzekoduz.pdfIn PDF document text
- https://dsverano.com/UserFiles/File/83210881251.pdfIn PDF document text
- http://yameitecl.com/ckfinder/userfiles/files/20210911_224832.pdfIn PDF document text
- http://giftboxvietthuy.com/upload/ck/files/37888646356.pdfIn PDF document text
- http://radio-salsa.com/php/rs/filesupload/file/zedulunuvijizotifavalojax.pdfIn PDF document text
- https://manusingh.org/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/3775134262.pdfIn PDF document text
- https://chachachat.info/js/ckfinder/userfiles/files/1720277832.pdfIn PDF document text
- http://longchimvac.net/app/webroot/uploads/files/rofepilodilesor.pdfIn PDF document text
- http://www.vandiestbrandstoffen.be/uploads/files/84162641946.pdfIn PDF document text
- http://thongthien.vn/upload/files/62345817684.pdfIn PDF document text
- http://brlairport.com/images/file/88989846118.pdfIn PDF document text
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/87a2b3f1c598be0de3f5a82a7e85f8a6/42409043414.pdfIn PDF document text
- http://taigesw.com/upload/files/86976373285.pdfIn PDF document text
- https://protrialse.eu/files/files/97990956143.pdfIn PDF document text
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d271f33ed0---9494446932.pdfIn PDF document text
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613204e6a4288---fukotitemanokir.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161400402a59b8---xezuja.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_off0000d98d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD98D | 10288 bytes |
SHA-256: 2dfd87768c896932f742ab0e498dfc82553312f01f340d78a27dd7100cf19751 |
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font_01_sfnt_off0000f0f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0F3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010905.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10905 | 18084 bytes |
SHA-256: 211a4a20985989fa933cb38369f35d03dae7f9b6f0f31b811b5858fed83592c6 |
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