MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. Multiple heuristics indicate the PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated, preventing analysis of its specific content, but the overall structure and URL findings strongly suggest a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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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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=bmi+formula+worksheet PDF link annotation
- http://kennycojewelry.com/userfiles/files/202106/1624921587.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607592870d7e5---fusafesovogufolotipevo.pdfIn PDF document text
- http://beveragesgs.com/userfiles/file/juxatituzobuwemugepuj.pdfIn PDF document text
- http://autoscuolauniversale.it/userfiles/files/tuzul.pdfIn PDF document text
- https://fundacionamigosdelmarcaribe.ong/ckfinder/userfiles/files/pivejufujafebupeba.pdfIn PDF document text
- http://lookkorea.net/userfiles/file/jegupitixored.pdfIn PDF document text
- https://quanghuydulich.vn/img_duhoc/files/72600294628.pdfIn PDF document text
- http://gotween.com/userfiles/file///madowuzoduxagukase.pdfIn PDF document text
- http://firesecurity.sk/userfiles/file/43924155397.pdfIn PDF document text
- https://go2germany.ru/files/file/gulobofelari.pdfIn PDF document text
- http://atel-j.nl/uploads/files/37925198785.pdfIn PDF document text
- https://dobre-akce.cz/media/files/file/jevukiradaxupizisuto.pdfIn PDF document text
- http://quiltingacademy.com/fckeditor/userfiles/file/purut.pdfIn PDF document text
- http://libertyquad72.fr/userfiles/file/fulubojuxejugulepapot.pdfIn PDF document text
- https://vsetinrally.cz/userfiles/file/lutidofolixevodagigiz.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/9cb997abe0a5f3cec287fc85d2007c72/nirekurevalativut.pdfIn PDF document text
- http://cathayred-csr.com/img-cathay/files/34309047584.pdfIn PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612754547d519---nomidexexenililumivare.pdfIn PDF document text
- http://papianiarch.it/userfiles/files/27834651469.pdfIn PDF document text
- http://analogsys.com/uploaded/file/31509648611d960d07552.pdfIn PDF document text
- http://dj-maily.com/uploads/pages/files/jufepilutukurufubexino.pdfIn PDF document text
- http://onlinecommerce.bg/uploads/pages/files/78494997878.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_off0000c2f1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2F1 | 10704 bytes |
SHA-256: d2dce413f12a6a4477822b1ba18433b7691fffd7fed1941f8dcd1a838ca2d752 |
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font_01_sfnt_off0000db9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB9F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f3b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3B1 | 16936 bytes |
SHA-256: 45d9e1fa73ad5c4803903540552a3f357090f056ca6f91635950a077bb930c5a |
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