MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains a large number of external URIs, many of which point to compromised CMS upload storage or disposable hosting. The ML classifier strongly indicated maliciousness, and the structure suggests a link farm designed to redirect users to potentially harmful content or for SEO manipulation. No scripts were extracted, but the presence of numerous external links is a strong indicator of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
Heuristics 5
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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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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://coretry.ru/uplcv?utm_term=free+online+video+editor+for+android
- http://tuzoltosagmihald.hu/userfiles/file/fojuxemi.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c3c5a2bee66087597c568a1702487744/22316200758.pdf
- http://hrudolf.com/userfiles/jojobifix.pdf
- http://silarperu.com/UserFiles/file/81157081197.pdf
- https://attackworkoutprogram.com/app/webroot/files/ckfinder/userfiles/files/92983495209.pdf
- http://oreade-breche.fr/userfiles/file/bemuvutivibumopag.pdf
- http://andersonlawdecorah.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/76041846355.pdf
- http://tai-group.com/upload/files/942858656.pdf
- https://brtim.com/uploads/wysiwyg/files/23532022516.pdf
- https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141c0795d914---30466295829.pdf
- http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/33498994404.pdf
- http://tekizolasyon.com/ckfinder/userfiles/files/81256343008.pdf
- http://michardardillier.com/ckfinder/userfiles/files/guwasap.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613065b1b0da8---jejaxogusoru.pdf
- https://gabconstruction.com/ckfinder/userfiles/files/duturasafetajote.pdf
- https://tutorsbureau.net/userfiles/file/womef.pdf
- http://www.jfac.kr/ckfinder/userfiles/files/xopagedopejosi.pdf
- https://ost-fogging.com/upload/files/samabon.pdf
- http://morakothotel.com/file_media/file_image/file/37048956546.pdf
- https://icrs-as.com/userfiles/file/77436048061.pdf
- https://majubesar.net/contents/files/95249717527.pdf
- https://hk-delight.com/UploadFiles/file/bowigapidumelu.pdf
- https://ferdavagnar.is/images/fck/file/mukejimizozirukesavewuku.pdf
- http://phongkhamthienhoa.vn/images/files/rerodakakitowa.pdf
- http://bratislava.topenglish.sk/app/webroot/gallery/files/95014774543.pdf
- http://jamalcar.com/userfiles/file/bejaxuxizotafa.pdf
- http://9meclinic.com/ckfinder/userfiles/files/9536764292.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e4aa.bin17336651d8645ead7d9f77d8b1285a16338cf252cd9e7cb5d64116338eccbd05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4AA | 17348 bytes |
font_01_sfnt_off00011189.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11189 | 16792 bytes |
font_02_sfnt_off000129a0.bind98baedc13dc59831de00aec7917e3143a7af30ec88bfcbc3795fc426ef3fbbe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129A0 | 10224 bytes |
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