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 pointing to compromised or disposable domains, indicating a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a malicious intent, likely for phishing or distributing further malware. The ML classifier and ClamAV detection further confirm the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://smidgel.ru/uplcv?utm_term=que+es+un+ensayo+argumentativo+pdf PDF link annotation
- https://oteaexpert.fr/cite_imgs/file/nedibegilawij.pdfIn PDF document text
- http://mastrodibaglio.it/userfiles/files/vuxosusomakufegitokuxew.pdfIn PDF document text
- http://www.tiande-global.com/ckfinder/userfiles/files/13564093982.pdfIn PDF document text
- http://okfilm.kr/userData/board/file/zasabomoz.pdfIn PDF document text
- http://nppgursaraijhansi.in/ckfinder/userfiles/files/jodifesefuma.pdfIn PDF document text
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f4dc5f95ea4---bufepa.pdfIn PDF document text
- https://anakaygame.net/calisma2/files/uploads/mabowowuxudofikid.pdfIn PDF document text
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/89e8f67e2cfb9e2b750dae42e56ddb35/dovodiwetaz.pdfIn PDF document text
- http://zespolbahamas.pl/zdjecia/file/dadijovaka.pdfIn PDF document text
- http://ukrainski-rosyjski.pl/userfiles/file/83750774151.pdfIn PDF document text
- http://wisdomtours.net/upload/file/famabasixoj.pdfIn PDF document text
- http://visit-pune.com/userfiles/file/2626939216.pdfIn PDF document text
- http://globeksa.com/ckfinder/userfiles/files/49155931515.pdfIn PDF document text
- https://mtmnetwork.net/uploadEditor/files/gusuvodoz.pdfIn PDF document text
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/3dd446f654d38797697bbac20406467a/33994939621.pdfIn PDF document text
- https://xehowo24h.com/images/ckeditor/files/xefonexidexupawiposuzobi.pdfIn PDF document text
- http://artin-intranet.com/ckupload/files/vokazaxulopipenosiropat.pdfIn PDF document text
- http://orchid-daikanyama.com/userfiles/file/kekafemidinow.pdfIn PDF document text
- http://clearspace-design.com/CKEdit/upload/files/todirujemupunobonubat.pdfIn PDF document text
- https://dalnoboy.com/data/filestorage/upload/files/kolarizasikobuzeman.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_off0000b64f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB64F | 11132 bytes |
SHA-256: ac2b60d60ef3062d9746cbc4d983adcd9655b4ea040bb52184d393709d498728 |
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font_01_sfnt_off0000d045.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD045 | 16796 bytes |
SHA-256: 1fe636e9198cd916e5923be6aeb90ad6aa94ca2700498995d801826809d292b8 |
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font_02_sfnt_off0000fa6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA6B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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