MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which are hosted on disposable domains or appear to be part of a link farm designed to obscure the final destination. Heuristics indicate these links are likely compromised CMS uploads and part of a link farm strategy. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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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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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=an99+camera+app PDF link annotation
- https://mudraconsultancy.com/uploads/files/86239161958.pdfIn PDF document text
- http://licausi.it/userfiles/files/20898420024.pdfIn PDF document text
- http://vimbark.sk/editor_uploads/files/5268615073.pdfIn PDF document text
- http://bluecreator.biz/ckfinder/userfiles/files/59460322169.pdfIn PDF document text
- https://ecoolteh.eu/galeria/file/45464003994.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/161395c32cea86---xesezijezomi.pdfIn PDF document text
- http://cortocircuito.trialpanel.com/images/Upload/files/gimavolukok.pdfIn PDF document text
- http://shipsupply.ru/userfiles/files/vawefakipegewazaw.pdfIn PDF document text
- http://cesarrodarte.com/userfiles/file/jukivuwepofaturodeximuza.pdfIn PDF document text
- http://www.alex-vasilkov.ru/images/wisdom/file/43840560323.pdfIn PDF document text
- https://onderdurdu.com/upload/ckfinder/files/rulisazi.pdfIn PDF document text
- http://vietsonplastic.com/uploads/userfiles/file/jerekitadirirusotewojo.pdfIn PDF document text
- https://htchninc.com/d/files/virasamupiwagez.pdfIn PDF document text
- https://songod.vn/uploads/image/files/wifivakikeluwojum.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/vjsj09ipu59jcaqiea28kcr8at/1704246772.pdfIn PDF document text
- http://bhk-aindling.de/userfiles/files/bezubu.pdfIn PDF document text
- http://benetalent.com/upload/files/57663781062.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/u48v5aid5g1bribhhqsk3p3j97/46467898208.pdfIn PDF document text
- http://futsalcb.cz/picture/vtextu/file/zedukixalaxirijezaxutowom.pdfIn PDF document text
- https://sydneystudytour.com/accounting/userfiles/file/mapasekefeponozon.pdfIn PDF document text
- http://tythb.com/uploadfile/files/73387192649.pdfIn PDF document text
- https://foundryindia.org/userfiles/file/kowujowe.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_off0000b6af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6AF | 16248 bytes |
SHA-256: 8f54cb31fd11d2fa03d2a9bf2fe54ace161f5c20df9fef2b0f33da310646f205 |
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font_01_sfnt_off0000e050.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE050 | 10160 bytes |
SHA-256: 6cf7d37abd852c833e3bf8ff49c8a7badf40a888ed43a95ef4c0fc9b9067beb9 |
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font_02_sfnt_off0000f710.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF710 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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