MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to potentially compromised CMS upload directories or disposable hosting, suggesting a link farm designed to distribute malware or conduct phishing. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content but containing embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 http://tecniagua.es/uploads/ckfinder/files/32573495331.pdf In PDF document text
- https://emailing-online.fr/uploads/userfiles/file/46414931590.pdfIn PDF document text
- https://funbugs.ie/userfiles/file/sawuxulepatava.pdfIn PDF document text
- https://curewelldiabetes.com/userfiles/file/niwaba.pdfIn PDF document text
- http://shijijiaming.net/filespath/files/20210915145223.pdfIn PDF document text
- https://vongtaytramhuong.vn/upload/files/63586496452.pdfIn PDF document text
- http://teamhead.net/userfiles/file/palesexodebanurepuj.pdfIn PDF document text
- http://speckletrack.com/update/editor/file/xewusidefenimaxi.pdfIn PDF document text
- http://daearesort.com/FileData/ckfinder/files/20210903_17BC7BDD2EA0F497.pdfIn PDF document text
- https://sierrainstruments.cn/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202109/file/mozumubukorofogajavunit.pdfIn PDF document text
- http://zima.italie-ubytovani.cz/data/file/zitubeda.pdfIn PDF document text
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16136c8c03e12e---37048192454.pdfIn PDF document text
- http://crystaltrade.hu/data/file/dokipewowena.pdfIn PDF document text
- http://cpgny.com/userfiles/files/24885908412.pdfIn PDF document text
- https://designclarf.it/file/36332704754.pdfIn PDF document text
- https://nhahangbienhaitien.com/uploads/files/jemaxafilivupademogatesew.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/0e299103891d71615853e4406517c22e/68488110289.pdfIn PDF document text
- http://ccsctda.com/ckfinder/userfiles/files/20210901_163123.pdfIn PDF document text
- https://rowsontw.com/shopadmin/upload/files/66851878639.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133a957a54e6---lizutad.pdfIn PDF document text
- https://fishuntpesca.it/file/18329024698.pdfIn PDF document text
- http://jhdljz.com/userfiles/file/1631491878.pdfIn PDF document text
- https://kindeeyudee.com/ck_files/files/37660586271.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=super+mario+mobile+apkPDF 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_off0000bffd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFFD | 16972 bytes |
SHA-256: 9454fcea2871098fdbc865800d31c43a7dee6e98a2147f479442df0c95ae1899 |
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font_01_sfnt_off0000eb88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB88 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001039f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1039F | 10452 bytes |
SHA-256: e33eef281589c11eba79023db5d8cf6dc9e8d0e1cb2845ddf18d80150ac7334d |
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