MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are hosted on disposable or compromised domains, indicating a malicious intent to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document's purpose is to act as a link farm, likely for phishing or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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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://irlanc.ru/uplcv?utm_term=watch+tv+online+together PDF link annotation
- http://anshan56.cn/userfiles/file/16312407791137144576.pdfIn PDF document text
- https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/wejasani.pdfIn PDF document text
- http://lica.plovdivweek.com/js/ckfinder/userfiles/files/xumutufib.pdfIn PDF document text
- https://n-zvuk.ru/upload/file/wuzepofugewamagofopix.pdfIn PDF document text
- https://nirkongrp.com/ckfinder/userfiles/files/miruroro.pdfIn PDF document text
- http://ntep2008.com/UserFiles/File/80026594557.pdfIn PDF document text
- http://www.fashiongale.ro/userfiles/files/givama.pdfIn PDF document text
- http://goldenbaycruisesagent.com/userfiles/file/9992307723.pdfIn PDF document text
- https://ripedzn.com/app/webroot/files/fckeditor/file/puseliwimeso.pdfIn PDF document text
- http://studioriboldi.eu/userfiles/files/9959110180.pdfIn PDF document text
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16153c80d7cf7c---2817518583.pdfIn PDF document text
- http://cornucopiafrederick.com/uploads/files/85420093456.pdfIn PDF document text
- https://floridahouselottery.com/test/userfiles/file/4395179049.pdfIn PDF document text
- http://www.gieskestukadoors.nl/ckfinder/files/files/tagasopajaxorevulut.pdfIn PDF document text
- http://ydchem.cn/filespath/files/20210912083750.pdfIn PDF document text
- https://indicaperu.com/userfiles/file/vusebefere.pdfIn PDF document text
- http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/cbd9c5df689a9f04c0613eafd95f2900/50241448688.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/9a6b5025394145f10a2d6db46015f2ea/xuziv.pdfIn PDF document text
- http://ducthai.vn/userfiles/file/86252791483.pdfIn PDF document text
- http://pushgroup.lv/userfiles/files/90709762699.pdfIn PDF document text
- http://v-lukomorie.com/uploader/files/zokitumosetajenuwu.pdfIn PDF document text
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16153b9de83571---26516114996.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_off0000ae63.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE63 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c67a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC67A | 10400 bytes |
SHA-256: d2ccb312850280e45dfc88bfffb8a4910c02ec005b497d4ed6e6065bb33d0a9f |
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font_02_sfnt_off0000ddf9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDF9 | 16668 bytes |
SHA-256: 43a5cc6524d9e02636f5f45efde28f640244252c5848d25cda1e5d804aec3112 |
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