MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains multiple external URLs, some pointing to compromised WordPress sites, suggesting a link farm or distribution point. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick users into installing software, a common social engineering tactic for malware delivery or credential harvesting. No scripts were extracted, but the PDF structure and heuristics point to a phishing or malware distribution attempt.
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://crewmak.ru/uplcv?utm_term=book+10+test+2+writing+task+1 PDF link annotation
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/e8106fcd1131f77f497f0a016d154c1f/49312747953.pdfIn PDF document text
- http://omegapizza.net/uploads/files/36017867365.pdfIn PDF document text
- http://aaaexpressheating.com/userfiles/file/42846984861.pdfIn PDF document text
- http://nickels.design/ckfinder/userfiles/files/11282472896.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/c51b9ea2023540c10656d9474a265d96/vovabonofadirojo.pdfIn PDF document text
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/bh7vnnhfo9e8lgvfr59pkkasv3/zilemixaxakofipi.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e25567cc5a---vikemev.pdfIn PDF document text
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16098633428c45---fijivu.pdfIn PDF document text
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/bb26ef2e0eea1ffc79ebc40ba1e3a0cb/53934717544.pdfIn PDF document text
- http://alituncer.com/userfiles/file/nabevozotenonadufuvuxuli.pdfIn PDF document text
- https://tecnicadovolante.com/images/file/9672958420.pdfIn PDF document text
- http://syuncyoku.jp/upload/file/21002679751.pdfIn PDF document text
- https://marosme.ro/hirek/file/16104675583.pdfIn PDF document text
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160771817e2c33---98133355512.pdfIn PDF document text
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/6db17b717fda38a2dd57c81c4e55a9f7/77199939389.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eb30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB30 | 5352 bytes |
SHA-256: c4a5e7dcc6f08555b65954b2c12246140eaee18e8b17cc26ca27af13d1d597e9 |
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font_01_sfnt_off0000fd9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD9A | 10780 bytes |
SHA-256: f1b99b9b1a8cf49da2288e613f5d11ce7575acb02375722225b4b71af96a988a |
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