MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for malicious PDFs to execute code. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM and the numerous extracted URLs indicate that this PDF is part of a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly support the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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://drafthe.ru/uplcv?utm_term=english+file+pre+intermediate+pdf+student%27s+book PDF link annotation
- https://www.cylinder96.ru/admin/ckfinder/userfiles/files/49824579516.pdfIn PDF document text
- https://harmony-lazienka.pl/Upload/file/10805282311.pdfIn PDF document text
- http://laxycoffee.com/upload/files/58107460078.pdfIn PDF document text
- http://dinhvi5s.com/images/newtech/files/kulalamosedeturejugu.pdfIn PDF document text
- https://bunianco.com/other_files/File/fenojewowuwoleja.pdfIn PDF document text
- https://www.stnedu.com/ckfinder/upload/files/78554689659.pdfIn PDF document text
- http://caratow.nl/userfiles/file/49894878715.pdfIn PDF document text
- http://csim.jp/ckeditor/uploads/files/75333578311.pdfIn PDF document text
- http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/91471268288.pdfIn PDF document text
- https://loyalangkorapartment.com/userfiles/file/41949895813.pdfIn PDF document text
- https://sitarasign.ir/data/file/semoxudofi.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136bcfb876f7---pitogapuwifeparakotu.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613daa39d6f66---nowepavegavutuzibiranog.pdfIn PDF document text
- https://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/22170069233.pdfIn PDF document text
- http://adria-ex.com/images/blog/file/15563009819.pdfIn PDF document text
- http://champagne-marc-chauvet.com/images/files/lekufojiwa.pdfIn PDF document text
- https://ksmt.edu.np/assets/ckfinder/userfiles/files/mukuru.pdfIn PDF document text
- http://sunil.kr/uploadfile/fckeditor/file/59580889130.pdfIn PDF document text
- http://sarljarry.com/userfiles/file/64662721418.pdfIn PDF document text
- http://budapesticukraszdak.hu/userfiles/files/subabekixikejoso.pdfIn PDF document text
- http://esrafisek.com/images_upload/files/84816632930.pdfIn PDF document text
- https://hotelpancharatna.com/assets/userfiles/files/migivazeveruti.pdfIn PDF document text
- http://pomocnaukowa.net/Upload/file/10462004744.pdfIn PDF document text
- http://poddertradingandindustries.com/userfiles/file/73122739765.pdfIn PDF document text
- http://phunggia.biz/userfiles/file/noruxe.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_off0000c823.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC823 | 19728 bytes |
SHA-256: 811b5e6a48a31660820bfb4fe6e660c09d58ef55e3624290d75ec3a276283a07 |
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font_01_sfnt_off0000fbcc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBCC | 11296 bytes |
SHA-256: 8dd55ff6c4d1ce94ff62ccd81ce4a1c99900076be300a8bc4c586f3883d003fe |
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font_02_sfnt_off000115b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115B5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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