MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document is detected as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV. It employs a social-engineering lure, instructing the user to install a browser extension or update to view content, which is a common method for malware installation. The document also contains numerous links to external PDFs hosted on compromised websites, suggesting a link farm used for SEO poisoning or distributing malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609083ee3e3c3---bozusimerevi.pdf
- https://noihoithanhtuan.com/media/ftp/file/85629790687.pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/29b2ac4e3855204de08ebfeee3729458/25596034139.pdf
- http://fujavietnam.com/images/Download/71469616301.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a09f070498---kefugibakomedisi.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a43634a3f6---jorikunelaxudibofurimifu.pdf
- https://mednet.mk/public_html/upload/userfiles/file/61709553462.pdf
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ab96dee5d17---xokepu.pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d88ee2f93---xovebipoxedu.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef66b4e777---29635151507.pdf
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/97c302fa2b7632d06effa1699f539f67/gewuxoxuwafateloxabobe.pdf
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/7169d2efdb73d0b8f0feeadee66c55b7/54586944386.pdf
- http://eko-inwest.eu/upload/file/16988143177.pdf
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607e054d04025---molurubejulujun.pdf
- http://vonkoenigsmund.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3ec8cdca9---finonolerid.pdf
- http://jinistudy.com/_UploadFile/Images/file/wekakupex.pdf
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/pp4j98lg5u8aq088ndo18m7tb3/19863495351.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=the+twits+pdf+free+download
- 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e363.binb5451dafa235fb2a44048fc9590bfbb8c2c65660ffcd9f4b25f2a598449c52cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE363 | 5168 bytes |
font_01_sfnt_off0000f505.bin89b5074caeb9d03fabaa72f5bb3a8ab819cf449d0275d31be5c1e5d5161addfa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF505 | 11052 bytes |
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