MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs and a heuristic firing for a 'download button' lure, suggesting it is designed to trick users into downloading malicious content. The presence of multiple external URIs and a link farm on disposable hosting further supports a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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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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://chcial.ru/uplcv?utm_term=best+pc+sites+to+download+games PDF link annotation
- https://hazeloyun.com/calisma2/files/uploads/wekavabukamabu.pdfIn PDF document text
- http://haiphongcontest.com/images/files/99270601386.pdfIn PDF document text
- http://capableapp.com/uploads/files/85298174096.pdfIn PDF document text
- https://cyc-catering.pe/disac/userfiles/file/xalomoro.pdfIn PDF document text
- http://architettodrabeni.it/userfiles/files/18481012350.pdfIn PDF document text
- http://poetische-malerei.de/web/editor/files/kuzokovobor.pdfIn PDF document text
- https://korzo-galeria.hu/files/file/7233162812.pdfIn PDF document text
- http://ekosertifikat.uznature.uz/userfiles/file/nototijelelomoj.pdfIn PDF document text
- https://projetovm.com/uploads/files/26010887145.pdfIn PDF document text
- http://ersatzmonitor.de/userfiles/file/kudijimiridoritipog.pdfIn PDF document text
- http://kxqcgs.com/filespath/files/20210927044752.pdfIn PDF document text
- http://daithanhnam.com/upload/files/xitako.pdfIn PDF document text
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/1fb1239d3b9f2b8c706d5aa88d8f5bac/bosamem.pdfIn PDF document text
- http://adamslakeband.org/userfiles/file/12774562286.pdfIn PDF document text
- http://webcertain.ca/contentupload/fckeditorUploads/organization_/file/letumujedulirexaxeluz.pdfIn PDF document text
- http://abwingssuffolk1.com/uploads/files/gijusivilulilabowaru.pdfIn PDF document text
- http://www.findvoters.com/userfiles/file/37860300265.pdfIn PDF document text
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16146c5a9d3609---6025754016.pdfIn PDF document text
- http://www.euro-fly.eu/userfiles/files/dasuwuv.pdfIn PDF document text
- http://mixmarketing.vn/upload/fck/file/muwezuma.pdfIn PDF document text
- https://giant-nano.com/app/webroot/userfiles/files/49067507812.pdfIn PDF document text
- http://masan315.net/board/imagefile/file/90017684282.pdfIn PDF document text
- http://st03.it/userfiles/files/69479092313.pdfIn PDF document text
- http://paitoonbox.com/userfiles/files/tobapubusomewigifab.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_off0000b4af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4AF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ccc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCC1 | 14936 bytes |
SHA-256: b351eec0cfb10a5c48f444f15e644cbbaa8c7540f36e0f5c585d6331378ac9b2 |
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font_02_sfnt_off0000f23a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF23A | 10896 bytes |
SHA-256: 62820746036c105a4e0372495da45980a5e6fc3337b4ada25dba70b9cc74c69c |
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