MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a strong intent to distribute malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://medvor.ru/uplcv?utm_term=decimal+to+hexadecimal+converter+step+by+step PDF link annotation
- https://tonthephunglan.vn/upload/files/48588328348.pdfIn PDF document text
- http://bfr-bialapodlaska.pl/userfiles/file/11216445437.pdfIn PDF document text
- http://moriefrusca.com/userfiles/files/44072296311.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/nkaoe5go2bqq2eqg0tre5ur2ag/lalerinumowilorapar.pdfIn PDF document text
- http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613720211f1aa---werilozixorupigalu.pdfIn PDF document text
- http://ginzaramen.us/uploads/files/7227184536.pdfIn PDF document text
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/43cfdf813e69bd1b4c35999bf70b95b6/17929174901.pdfIn PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614b0b05a189a---zajugagugaxuruduxev.pdfIn PDF document text
- https://towa-aaa.jp/userfiles/file/ramujadunapigugen.pdfIn PDF document text
- https://fpcofmacon.com/nbloom/fckuploads/file/matoz.pdfIn PDF document text
- http://stardentalcare.org/userfiles/file/36699708831.pdfIn PDF document text
- http://haiqi-machine.com/d/files/46863068204.pdfIn PDF document text
- https://cryptobasics.biz/uploads/files/3443334018.pdfIn PDF document text
- http://sydjpg.com/images/upload/file/20210907_152932_124.pdfIn PDF document text
- http://yourbuilding.ru/userfiles/files/jufunatizutojef.pdfIn PDF document text
- https://firesystem.ro/imagini_ws/pupozituviwideko.pdfIn PDF document text
- https://terracetemayonetim.com/upload/ckfinder/files/7259407640.pdfIn PDF document text
- http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/jukinimakirarosal.pdfIn PDF document text
- https://mut-zur-veraenderung-hambuch.de/userfiles/file/72106898974.pdfIn PDF document text
- http://primebrokeragetx.com/ckfinder/userfiles/files/95691218728.pdfIn PDF document text
- https://menlopark.com/wysiwygfiles/file/tevenumejawejimovufobo.pdfIn PDF document text
- http://f1-rennsimulatoren.de/userfiles/file/95645144008.pdfIn PDF document text
- https://textolinguisticsolutions.com/upload/editor/file/vivadaweriwaved.pdfIn PDF document text
- http://farmaciafasolis.eu/userfiles/files/97080854312.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_off0000d3c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3C0 | 11200 bytes |
SHA-256: 165231419227dd157d8828bc9a2a963a7f3018df32f093d55ce7491a2b7b0a5a |
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font_01_sfnt_off0000ed9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED9B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000105ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105AD | 18320 bytes |
SHA-256: 0f52c3d62c2a38cef8346cb91b52520917606350477640343f1553ada7e86eb0 |
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