MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a link farm pointing to multiple external URLs, some hosted on compromised CMS platforms. The primary function appears to be redirecting users to potentially malicious content, indicated by the PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
Heuristics 7
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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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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://master.plus/wp-content/plugins/super-forms/uploads/php/files/763d3f5590afca80098fd1f76f991e5e/32225873347.pdf In PDF document text
- http://friulanamarmi.it/images/file/kukojurawo.pdfIn PDF document text
- https://sitpchemcieszyn.pl/_sitpchem/file/41392394773.pdfIn PDF document text
- http://sun-dr.com/uploads/files/202109160401517020.pdfIn PDF document text
- http://oreade-breche.fr/userfiles/file/17907917328.pdfIn PDF document text
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb8622150d---zubazuxewilevixivazav.pdfIn PDF document text
- https://truckforceone.com/upload/editor/file/tarepuxinedokegafigeres.pdfIn PDF document text
- http://ainut.fi/userfiles/file/23036722187.pdfIn PDF document text
- https://atasuorganiktarim.com/upload/ckfinder/files/80266908824.pdfIn PDF document text
- https://jyapa.com/jhuoyue/uploadfiles/62489854812.pdfIn PDF document text
- http://www.investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/23451297425.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1613767c10311b---93745304330.pdfIn PDF document text
- http://volvo-cars.jp/js/upload/files/wezorakelotuvov.pdfIn PDF document text
- http://www.psyforyou.nl/upload/fckeditor/file/piburulapoginib.pdfIn PDF document text
- http://bloodfaces.de/attachment/file/golerede.pdfIn PDF document text
- http://sinojjacob.com/userfiles/file/zexubuwikomofokodijezu.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138c91a25a1e---tudafovodenezi.pdfIn PDF document text
- https://portecitadelle.portecitadelle.ca/ckfinder/userfiles/files/6340882996.pdfIn PDF document text
- http://terwaarde.be/ckfinder/userfiles/files/woxetar.pdfIn PDF document text
- https://marblobaths.com/app/webroot/img/files/bifilonipoketelag.pdfIn PDF document text
- https://burstallconrad.com/editor_files/file/vumajutodataw.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=lightroom+apk+presets+free+downloadPDF 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_off0000b52f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB52F | 11080 bytes |
SHA-256: c001283f4839f00feb081958a2c2d777429e79f876e4ab8a80b7c2abae4cda5e |
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font_01_sfnt_off0000ceb0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEB0 | 19424 bytes |
SHA-256: 29acf92a0f2a07527ee562d3e360f8bf1db317647b6733aff46287466a7efe06 |
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font_02_sfnt_off000100bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100BD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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