MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The embedded JavaScript is likely used to redirect the user to these malicious sites, which could host further malware or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161321ed6571d7---refezufakulagudo.pdf In PDF document text
- http://ventiliatoriai.lt/js/ckfinder/userfiles/files/xisuvugolu.pdfIn PDF document text
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614dbc521095b---jekag.pdfIn PDF document text
- http://vipacademy.org/userfiles/file/magetotixuvifokolukozen.pdfIn PDF document text
- https://cosanuesa.com/componentes/editor/ckfinder/userfiles/files/44251570046.pdfIn PDF document text
- https://mantyobras.com/userfiles/file/gagefunilipuku.pdfIn PDF document text
- http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/lufeke.pdfIn PDF document text
- https://jmcoverseaspvtltd.com/uploads/files/genapazavawefoveba.pdfIn PDF document text
- https://euforbiabulgaria.gbinvest.net/uploads/pages/files/6055161327.pdfIn PDF document text
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/a67d88a4b3eb238140199af8585bea17/62595017000.pdfIn PDF document text
- http://natpuedu.in/userfiles/file/pexosazufotixixatanobozej.pdfIn PDF document text
- http://beijingxinzhi.com/userfiles/file/20210920000753_1879931036.pdfIn PDF document text
- http://bsp-oblspl.org/ckfinder/userfiles/files/xaturak.pdfIn PDF document text
- http://johnmarzillier.com/ckfinder/userfiles/files/72973483600.pdfIn PDF document text
- http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dokuvonasesujitadup.pdfIn PDF document text
- https://nikoljski.com/ckfinder/userfiles/files/97346920256.pdfIn PDF document text
- http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/zilijoxobapiwiloziretaka.pdfIn PDF document text
- http://shbaicun.com/userfiles/file/2021091901364273499.pdfIn PDF document text
- https://pepinieramontana.ro/ckfinder/userfiles/files/fowebusoxunaxo.pdfIn PDF document text
- https://get-insurance.in/ckfinder/userfiles/files/kozegitosuvopoloto.pdfIn PDF document text
- https://vidaleve.ind.br/ckfinder/userfiles/files/wabebevidajoxazep.pdfIn PDF document text
- https://gad-elhak.com/userfiles/file/88630672692.pdfIn PDF document text
- https://www.pactforfamilies.org/ckfinder/userfiles/files/61588927438.pdfIn PDF document text
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131686d203df---71043977835.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=wifi+cracker+android+rootPDF link annotation
- 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_off0000b2ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2BA | 15456 bytes |
SHA-256: d8f35b8183d4b7de87813d5cdcd7298df939739bfe0ee9ef8a5b76c314563a60 |
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font_01_sfnt_off0000da25.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA25 | 10340 bytes |
SHA-256: f9f7ca7b7ee41db0cfcb9e70071b7a7a81f77d8704136f1cb6a974d5e9aadd71 |
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font_02_sfnt_off0000f1a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1A3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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