MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://chcial.ru/uplcv?utm_term=neither+or+either+pronunciation PDF link annotation
- http://cheliabinsk.realxenon.ru/uploads/files/kebuf.pdfIn PDF document text
- http://1000projects.ru/upload_picture/file/tunupaken.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615d9e0273539---juxifemaxaje.pdfIn PDF document text
- http://hopkim.vn/upload/files/sagabosob.pdfIn PDF document text
- http://portalinmobiliario24.com/uploades/fckeditorfile/bewagezotinoxutebojirijup.pdfIn PDF document text
- http://khachsanmyngoc.com/upload/files/pupumovemomebokobezofano.pdfIn PDF document text
- http://koala-al.com/d/files/76256826193.pdfIn PDF document text
- http://klgd.spokoino.ru/i/upload/files/34392603616.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161493f8544377---woniwiwibetudux.pdfIn PDF document text
- http://gold-carsales.com/js/upload/files/89545627576.pdfIn PDF document text
- http://playbabydoll.com/userfiles/file/favebenivibituvurop.pdfIn PDF document text
- http://dentish.ru/ckfinder/userfiles/files/jiburosusefulavej.pdfIn PDF document text
- http://imreelectric.sk/uploads/file/bujakuvipetosa.pdfIn PDF document text
- https://vayamcs.com/content_files/files/72435470860.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/go3geoks8uhpfpav7jgbt3t47q/tudipiniborigi.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141914b1086e---fejogagol.pdfIn PDF document text
- https://heks-tech.com/app/webroot/userfiles/files/92286269028.pdfIn PDF document text
- http://giaexploring.it/userfiles/files/dexowovebemu.pdfIn PDF document text
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/161476e8247cef---wozitog.pdfIn PDF document text
- http://dakov.hu/_user/file/dodamewewidurabopuvesuza.pdfIn PDF document text
- https://corpusbg.com/files/fck/file/71683381903.pdfIn PDF document text
- http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/katonixilelup.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_off0000d371.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD371 | 10336 bytes |
SHA-256: 4678c849d9f88fdd1e01e3bb19c6faea7488091c214d932b3f9a5d613cfa5211 |
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font_01_sfnt_off0000eab3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAB3 | 20908 bytes |
SHA-256: f5972d62bcf1a4d5c5c537aa75994d6f329e8044754656839cedd28d17428c4d |
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font_02_sfnt_off0001212a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1212A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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