MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document exhibits characteristics of a phishing lure, specifically using a 'Browser extension / update installation lure' to trick users into downloading a payload. The presence of numerous external URIs, many pointing to compromised WordPress sites, suggests a distribution mechanism for malicious content. While no scripts were directly extracted, the overall structure and heuristic firings strongly indicate a malicious intent to deliver a secondary exploit or malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://smidgel.ru/uplcv?utm_term=windows+10+how+to+install+updates+manually PDF link annotation
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073a06003a2b---30820671593.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/ef974f4ebbb0219b764ddbac36006b32/kajobeni.pdfIn PDF document text
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16098633428c45---fijivu.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/8e7a59e779b9be6c8d20b824fda6d5db/fodom.pdfIn PDF document text
- http://fvv-hohenfelde.de/sites/default/files/files/netelonisomajizesedojok.pdfIn PDF document text
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/8c32eacde1130841f54119ff4d5ce9c7/tizanoraji.pdfIn PDF document text
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607006fc1c91f---65542690466.pdfIn PDF document text
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/d8b02a00fd8ddafeab1dee2716d53181/8945150793.pdfIn PDF document text
- https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/gqged9v2hn4ci3g52vhaddjlmg/84557616050.pdfIn PDF document text
- http://cesnek-vysocina.cz/UserFiles/File/rizidikemenavebenatur.pdfIn PDF document text
- http://luingpyrex.cz/foto/Image/file/tiganisutopo.pdfIn PDF document text
- http://cutskytools.com/d/files/4425458262.pdfIn PDF document text
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/bed9k1s585kgnndtr1upr2mc3s/69960875425.pdfIn PDF document text
- https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16074b8200137a---didex.pdfIn PDF document text
- http://angelojrobles.com/admin_initial_test/userfiles/file/depajinasagoro.pdfIn PDF document text
- https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/51afbe3d569e77329c528d2f3adfdf49/jesosun.pdfIn PDF document text
- http://metrocars.london/survey/userfiles/files/zalumolebepakabataten.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/n6oqhlbcl9uk5ppl9dqeon00t7/51719755064.pdfIn PDF document text
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a29bb9544b0---pisaw.pdfIn PDF document text
- https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/tcbmfrt45upt92hu05ql2ak9a0/2607668296.pdfIn PDF document text
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/16090499a5a239---73934897175.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/8c1f20a8afa2d3161d67c66c4493f523/nenowarenoj.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160848a3614e43---xelimexaw.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/garisabanurepaz.pdfIn PDF document text
- https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/ueagckoaeke9us83kii8klpfo4/mozefur.pdfIn PDF document text
- https://www.pugetsystems.com/guides/1171In 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_off0000f5cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CF | 11024 bytes |
SHA-256: 2716411120a320681c4b706909bb6b3c57fa28a2287c0e6ef4d3dff016c30c47 |
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font_01_sfnt_off00010f56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F56 | 17376 bytes |
SHA-256: 959a331fb539f83e2816549131bb8e0b9cd61712d863524725d821c25257bc37 |
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font_02_sfnt_off00013cfa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CFA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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