MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves leveraging these links for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://chcial.ru/uplcv?utm_term=compliance+%C3%A9tica+responsabilidad+social+e+empresarial+pdf PDF link annotation
- http://knshzj.com/CKEdit/upload/files/99512446406.pdfIn PDF document text
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/79e6a6ffc38307bb60d203d9604b525f/40608030527.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160874c3905238---86357159912.pdfIn PDF document text
- http://flywings.sk/UserFiles/file/8263660939.pdfIn PDF document text
- http://goref.ru/files/file/porezokawujeviwisavipegi.pdfIn PDF document text
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/0b18b8775d369aa1cd40a7350eae45ac/53948317658.pdfIn PDF document text
- http://canxetaidientu.com/images/file/1347597726.pdfIn PDF document text
- https://aspaeng.com/files/image/files/92811468666.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611b948c688a6---wajubomogov.pdfIn PDF document text
- https://tskrea.com/userfiles/file/62340236543.pdfIn PDF document text
- http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/35912932388.pdfIn PDF document text
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/2ce87eedfd654768c981ebf192487e98/6029687228.pdfIn PDF document text
- http://cathyknightwaite.com/ckfinder/userfiles/files/tuxoxazugapuluzefo.pdfIn PDF document text
- http://mmprogetti.it/userfiles/files/gosifesivesu.pdfIn PDF document text
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833e2f94618---bewozojawo.pdfIn PDF document text
- http://dokumsuzgec.com/userfiles/files/70028075407.pdfIn PDF document text
- https://palezieux.com/ckfinder/userfiles/files/65704654500.pdfIn PDF document text
- https://healthmatters.me/userfiles/file/92499733508.pdfIn PDF document text
- https://pediatricpotentialsnj.com/PP/PPpng/files/nubegeveleravumofi.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610c24da59d0c---lexizidinep.pdfIn PDF document text
- http://paramountswimwear.com/userfiles/files/gevumedixexufemajuwa.pdfIn PDF document text
- https://mudraconsultancy.com/uploads/files/40209824594.pdfIn PDF document text
- https://lensmam.com/userfiles/file/19456794253.pdfIn PDF document text
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/5c8kafbn63cp3fjtrem6lupf6p/16338851241.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_off0000df5f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF5F | 17940 bytes |
SHA-256: ce7181dd58bdede232d6e3304131358e2d0331c711fc382848de7b3969c43f47 |
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font_01_sfnt_off00010d26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D26 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001253d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1253D | 11104 bytes |
SHA-256: 80d84b606632d30ed6e9c5b5bd23bc5ecd8a81cd201c7155930c240e5edb17e9 |
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