MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting vulnerabilities or redirecting users to malicious sites. Several heuristics indicate the PDF is part of a link farm, with many URLs pointing to potentially compromised or disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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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 https://hyundaia.ru/userfiles/file/30293271295.pdf In PDF document text
- http://larrysiegellaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xiweduxeletuji.pdfIn PDF document text
- http://quimis.net/js/ckfinder/userfiles/files/folinosetowidopalodu.pdfIn PDF document text
- http://eldorautomaticgates.com/UserFiles/file/21545056364.pdfIn PDF document text
- https://edu-mate.kr/_UploadFile/Images/file/rasiw.pdfIn PDF document text
- https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/23528713887.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c92ad3cdb---ziremifegusoxobufapovedu.pdfIn PDF document text
- http://carolstoecker.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/30631507716.pdfIn PDF document text
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6e55cebeb1---67548753808.pdfIn PDF document text
- http://nwatchonline.net/userfiles/file/8144912931.pdfIn PDF document text
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160c1d4a831337---seleder.pdfIn PDF document text
- https://educhina.mn/editor/files/30740345261.pdfIn PDF document text
- http://serbanindustrialconstruct.ro/uploads/files/febaw.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160bc69be9e5d1---75462394463.pdfIn PDF document text
- http://coral-travel66.ru/admin/ckfinder/userfiles/files/91560483236.pdfIn PDF document text
- http://bouwbedrijfansing.nl/userfiles/file/34277996697.pdfIn PDF document text
- http://kvarkeno56.ru/userfiles/file/kujojijet.pdfIn PDF document text
- https://yourownadviser.com/ckfinder/userfiles/files/88165031967.pdfIn PDF document text
- https://metnar.pl/web/uploads/files/33392219879.pdfIn PDF document text
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/eq3ubkua2ihcfl49pe7dfc8712/35517325369.pdfIn PDF document text
- http://mariekevanvlierden.nl/survey/userfiles/files/29333079430.pdfIn PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c42ffd2f107---kojobezo.pdfIn PDF document text
- https://voyageaventurenepal.com/upload/files/fonajobozuvusenutaliza.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=exercicios+tipos+de+sujeito+8+ano+pdfPDF 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_off0000d73d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD73D | 20800 bytes |
SHA-256: 62227f6dd85e72627cddbf855eb94c4b1d47db06627d30bb5cd522cf26c2505e |
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font_01_sfnt_off00010b4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B4B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012362.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12362 | 11088 bytes |
SHA-256: 72b62863401f0989489dc7cfa953c7ce586fab3e8b2eb20530750b48b30728b9 |
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