MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous URLs pointing to compromised websites, suggesting an attempt to trick users into downloading further malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a strategy of using many distinct hosts to obscure the malicious intent. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports a malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://inwebjor.ru/uplcv?utm_term=software+update+for+samsung+galaxy+s4 PDF link annotation
- https://www.soroptimist.be/oldsite/intranet/ckeditor/ckfinder/userfiles/images/files/bujitorowaxenafo.pdfIn PDF document text
- http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161365adde6cee---bokijaxo.pdfIn PDF document text
- http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/mizudojege.pdfIn PDF document text
- http://favorit.pl/userfiles/file/sijoxovoneko.pdfIn PDF document text
- http://rjbmachinery.com/d/files/5931707970.pdfIn PDF document text
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/di3cc4cuoamhebcdb5fmsahucu/lujenisaxeludezogafinib.pdfIn PDF document text
- https://easy2ticket.com/upload/files/30180454862.pdfIn PDF document text
- http://sisparts.pl/zdjecia/fck/file/83883531847.pdfIn PDF document text
- http://lobanowscy.pl/userfiles/file/3015663976.pdfIn PDF document text
- http://seattledesis.com/fckeditor/file/28733689628.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/ed825e33a9e1f09cbe400768f6443bb0/75961854957.pdfIn PDF document text
- http://the-bom.kr/upfile/files/gexefokijuzitokepixebe.pdfIn PDF document text
- http://thestarbusan.net/FileData/ckfinder/files/20210902_99E914EDB8EC8C7D.pdfIn PDF document text
- http://andrenickels.de/ckfinder/userfiles/files/44237072885.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/298caaa1e9d211b673fcd8b2a6d7de2b/kizodoxikubotu.pdfIn PDF document text
- http://yetisirkaucuk.com/firma/files/74942625398.pdfIn PDF document text
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/0e312a862e4220d26d0a2bd95c1ccfdd/85806754373.pdfIn PDF document text
- http://kanizsakran.hu/userfiles/file/pemewekater.pdfIn PDF document text
- http://resheto.ru/users_images/fck/file/litux.pdfIn PDF document text
- https://cremyco.com/app/webroot/docs/file/gejipaxatateto.pdfIn PDF document text
- http://bwemfjhjk.friend-match.com/upload/files/nemewinamuwojowo.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_off0000dbba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBBA | 17860 bytes |
SHA-256: 2d3d1e78fedbe12b2bf7d7bfe20d0fca0b0366cc0b8e7887a10ae1e85702c626 |
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font_01_sfnt_off00010a0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A0C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012223.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12223 | 11304 bytes |
SHA-256: 27d40f075b48d77e389eaa945cfccbc6fe0d118cf68634c64652fcdf7efd3dd2 |
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