MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with spearphishing attachments used to deliver further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 https://inwebjor.ru/uplcv?utm_term=cadbury+corporate+governance+pdf PDF link annotation
- http://rsst77.ru/upload/files/32620987002.pdfIn PDF document text
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0784ba1c2---88595398587.pdfIn PDF document text
- http://hosungtour.net/FileData/ckfinder/files/20210714_D9214A55803E0C10.pdfIn PDF document text
- http://suapaiatuipelehakefamily.com/clients/80707/File/89120088772.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160afd3be7a2f6---77888513613.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f1f27096a---91053073179.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/fb2f76e0d39e733ae12d8bbe3a31f1c8/86406071231.pdfIn PDF document text
- http://www.pvvc.cz/files/93519626615.pdfIn PDF document text
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160bd1755a741f---48036594811.pdfIn PDF document text
- https://agatanorek.com/files/file/55396214459.pdfIn PDF document text
- http://ediliziaunoaventi.com/userfiles/files/poposev.pdfIn PDF document text
- http://richmore.kr/uploadfile/fckeditor/file/torefalovi.pdfIn PDF document text
- http://dh-cell.net/ckfinder/userfiles/files/boperekuju.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/9b15360b45e20ff68c199eaaf3b3ba02/lefozaseteti.pdfIn PDF document text
- https://amatnieks.com/pictures/image/27605282926.pdfIn PDF document text
- http://fantasymusic.it/userfiles/files/24113508203.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a44f58349c1---rinugubu.pdfIn PDF document text
- http://lamarchesainterita.be/lamarchesainterita/imgdb/news/files/xiwetududutekilenitane.pdfIn PDF document text
- https://citronixdeflection.com/nbloom/fckuploads/file/47789378203.pdfIn PDF document text
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c84e7991d59---46070146810.pdfIn PDF document text
- https://tongdaidoanhnghiep.com/app/webroot/upload/files/54109259173.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd868e5a2d4---95248753318.pdfIn PDF document text
- https://silverstonedevelopments.com/ckfinder/userfiles/files/59265091758.pdfIn PDF document text
- https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/zugapuwuxedi.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_off0000db6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB6B | 10940 bytes |
SHA-256: b1c810047b336d1f8a49820202695dc08e5ce4d5ec43443537fadc7784f6916b |
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font_01_sfnt_off0000f484.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF484 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010c96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C96 | 18952 bytes |
SHA-256: 4c795f8a72baf81797be187de145b33721182b490fcd94b7c909bc83788f2136 |
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