MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file contains embedded JavaScript and a large number of external URIs, many of which point to compromised websites or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content or executing exploits.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://coretry.ru/uplcv?utm_term=good+pdf+reader+for+windows+10
- http://cegled.varosom.hu/userfiles/files/99164821407.pdf
- http://gemculture.com/userfiles/file/9607944242.pdf
- http://k3projekt.pl/uploads/userfiles/files/norinixofumok.pdf
- http://tutaylamhet.com/storage/ckfinder/files/54782836283.pdf
- https://olympicwroclaw.pl/zdjecia/fck/file/tadukenukofibupepukav.pdf
- https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/et975mguuud8l6dqsv8vsmqln4/24425476349.pdf
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141e71c7d605---wesagopanowabejovopiba.pdf
- http://nasfthr.com/userfiles/file/13294861856.pdf
- https://almoheetmanpower.com/public_html/userfiles/file/piwobidovixotodemojero.pdf
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130acf82fb51---pesupetiv.pdf
- http://hoinhikhoavn.com/img/files/wotemapimef.pdf
- http://livestocktool.com/d/files/lezivojegozoleboziwepuje.pdf
- http://ventiliatoriai.lt/js/ckfinder/userfiles/files/15831062341.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161313aebeff9c---10717263503.pdf
- http://abwninemile.com/uploads/files/mulozuzopel.pdf
- https://babetravelling.com/ckfinder/userfiles2/files/pazibesuxemasovatowez.pdf
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146176bd0295---94904045773.pdf
- http://romangruszecki.com/uploaded/file/37312600036.pdf
- https://booking-news.hkdnracing.com/webroot/editor-uploads/files/2267791877.pdf
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16130ff524456e---dezoruk.pdf
- http://architettogherardi.eu/userfiles/files/91029584101.pdf
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/4e5d94b2a76c108ec0a246254d862dd1/43517866768.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b656.bin3d253d7830416e9d64617293f75451a47a869221698a809d5bd4d00cdd8c3ea7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB656 | 16216 bytes |
font_01_sfnt_off0000df8e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF8E | 16792 bytes |
font_02_sfnt_off0000f7a5.bind459efa240ce166cf580596b00200c2bde2b2d1dec7d25502a7a499109305cc6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7A5 | 10648 bytes |
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