MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document's primary purpose is to act as a link farm, likely to direct users to malicious content or phishing sites. The presence of these links and the overall detection suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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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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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://synerhu.ru/uplcv?utm_term=what+is+the+general+purpose+of+article+1+of+the+constitution PDF link annotation
- https://prestinieurope.com/userfiles/files/71983248802.pdfIn PDF document text
- http://cmtl.in/uploads/userfiles/file/file/83666822215.pdfIn PDF document text
- http://progettarecasa.com/userfiles/files/duwozovafoj.pdfIn PDF document text
- http://di-tech.kr/fckeditor/userfiles/file/42563184717.pdfIn PDF document text
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/93c243b4a9f9b03ee902579e5800e30f/95655164435.pdfIn PDF document text
- http://vnos.vn/app/webroot/uploads/files/folazomaseburesugobovem.pdfIn PDF document text
- https://tigaintan.com/contents/files/80042421066.pdfIn PDF document text
- https://tectrongim.com/uploads/files/bunifusariliworexu.pdfIn PDF document text
- https://concurs-euclid.ro/upload/fck/javinu.pdfIn PDF document text
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/08892f4722fac7682c1e1dcdd6860f0f/kupaxu.pdfIn PDF document text
- http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210901203215.pdfIn PDF document text
- https://am-system.eu/ckfinder/userfiles/files/duzoxelegepini.pdfIn PDF document text
- http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/bupajovaxakenifufonopa.pdfIn PDF document text
- http://customize.fr/fckeditor/editor/filemanager/connectors/php/img/Editor/file/88855061999.pdfIn PDF document text
- http://janjoling.com/public/ckfinder/userfiles/files/rupekavezagufufofof.pdfIn PDF document text
- http://www.rify.us/cms-uploads/files/49794951652.pdfIn PDF document text
- http://xatrbio.com/userfiles/file/17311473656.pdfIn PDF document text
- http://fertilityupdates.com/userfiles/files/gikaxef.pdfIn PDF document text
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/807094cb2dc95761b62c761e5c4350e1/sujapedoximizevofipekaxuv.pdfIn PDF document text
- http://alfavs.eu/userfiles/file/xufinelikituruxez.pdfIn PDF document text
- https://windsbs.biz/files/file/kekiv.pdfIn PDF document text
- http://materialdeestudo.top/userfiles/files/xebos.pdfIn PDF document text
- http://snp-ent.com/files/fckeditor/file/2093002095614c343f8b5ee.pdfIn 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_off0000f2e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2E6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010af8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AF8 | 18896 bytes |
SHA-256: 94fc5f1a93a99f2549862948b74f015667cd8f54cc1d3a9f035efe9db05798cf |
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font_02_sfnt_off00013ba6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BA6 | 10904 bytes |
SHA-256: 1f850396611bf0819cb18139e1b6e33d7f02334b339e84d7bad30419ecaffbf6 |
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