MALICIOUS
172
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 designed to distribute malicious files. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery via a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://medvor.ru/uplcv?utm_term=net+exam+2019+bengali+syllabus+pdf PDF link annotation
- http://erbamedica.org/userfiles/files/nijakezupanadul.pdfIn PDF document text
- http://morethancars.nl/uploads/edytor/file/vazuzofexene.pdfIn PDF document text
- https://zweefvlieg.net/userfiles/file/3014643766.pdfIn PDF document text
- http://jagodkaprzedszkole.pl/userfiles/file/65921619929.pdfIn PDF document text
- https://biserica-izvorul-tamaduirii.ro/files/13613723410.pdfIn PDF document text
- https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/ab1e3c436572286fe999b77078ea240d/48110712246.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/c74f7aba7cbc4fd9d95ed9c24a93387c/xufuwutomukukidonizute.pdfIn PDF document text
- http://hilltop1976.com/clients/24685/File/vikavajudimolepepujono.pdfIn PDF document text
- http://thuephotocopytaihanoi.com/upload/files/62729904300.pdfIn PDF document text
- http://dobre-jaja.com/Upload/file/3983598331.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/e4652fc3c68635129118e4efc5663bb8/63316821245.pdfIn PDF document text
- https://livredart.com/ckfinder/userfiles/files/19027717570.pdfIn PDF document text
- https://igescanada.com/ckfinder/userfiles/files/jinegukixaruduralas.pdfIn PDF document text
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/3d49245b7b2b2828a740309d8c3d4ca9/dubonijasazanogijipezewas.pdfIn PDF document text
- http://morgancountyoh.com/userimages/28441367612.pdfIn PDF document text
- http://acrclubinversores.com/files/galeria/files/55705491797.pdfIn PDF document text
- http://hnkingdee.cn/Files/file/2021523153338.pdfIn PDF document text
- http://autostyle-japan.com/js/upload/files/57548115870.pdfIn PDF document text
- http://temple.mo/userfiles/file/32734165725.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072ff16400fe---49163236092.pdfIn PDF document text
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/f972cb61e1585f284ca736e3c58d6eaa/wikapetuj.pdfIn PDF document text
- http://historico.uts.edu.co/portal/app/ckfinder/userfiles/files/gekofozomenotox.pdfIn PDF document text
- http://soflcops.com/clients/83267/File/lolaxajagemediza.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_off0000dbd3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBD3 | 18216 bytes |
SHA-256: 5d3146143d98e2a6d30013f14f3eb8016501c18f6bb7a71fde1c6a8b9d692e13 |
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font_01_sfnt_off00010b30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B30 | 11516 bytes |
SHA-256: 1bd3dbe9a453f06590f1a19686f7ad7ab54c831e2447394446ee9d8b06995ff9 |
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font_02_sfnt_off0001262e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1262E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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