MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The document employs a social-engineering tactic by luring the user to install a browser extension or update, a common method for credential theft or malware delivery. Numerous URLs were extracted, many pointing to compromised CMS upload directories, suggesting a distribution network for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://crysiq.ru/uplcv?utm_term=cube+surfer+pc
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3b009cb1a---94836068522.pdf
- http://harchovyk.com/userfiles/file/29045283996.pdf
- http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e52fa1276c---73376488274.pdf
- https://asiarsolutions.com/userfiles/file/22329360352.pdf
- http://kemenyseprosiklos.hu/upload/file/77961980341.pdf
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/p6l2c31bhc714f3vnohmiensml/78218415971.pdf
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/do2r8ghcuaujai73qhdv23ouu7/76750191479.pdf
- http://internationalnetworksolutions.net/files/musotivufa.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607846f109169---zebapox.pdf
- http://aaaexpressac.com/userfiles/file/79682924551.pdf
- http://archi1919.com/smlclub-files/file/20289612149.pdf
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/qf742nibilnr6ihao5ek22n5d1/zijenufepixadukoxu.pdf
- https://bkht.vn/userfiles/file/gifuvoxoveratikotevibiw.pdf
- http://banlinhkienlaptop.com/userfiles/file/bewuzetowet.pdf
- https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/t43v1d0u0ajepte6jjj3pa2nbn/58837513952.pdf
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a4eeab57d5d---suginuguruxivasiwixapu.pdf
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/8c259f780b6b9267eda913cec5ba5592/75781614102.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4099a7f9d---mexidibevufasijobebexet.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- 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://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec8a.bindd193ee844281bd898010c9aff8b417be2bfd3b5e76b35cb73fb73b75f98bc74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC8A | 4468 bytes |
font_01_sfnt_off0000fbc3.bin0f287813d93565c98b195b5a65b96aa908bc4b010ab5d017302ab47938a86c6b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBC3 | 10784 bytes |
font_02_sfnt_off00012087.bin7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12087 | 4324 bytes |
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