MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Static analysis revealed numerous embedded URLs, many pointing to compromised CMS upload directories and disposable hosting, indicating a link farm designed to redirect users. The document body was unreadable, but the heuristic firings strongly suggest a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://nikoljski.com/ckfinder/userfiles/files/kukopegitix.pdf In PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8a43a8df7---69308467056.pdfIn PDF document text
- http://www.ochoadentalcare.com/tacgestorcontenidos_ochoa/documentos/file/82575136202.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/f7fdba75c285bd83cee29309d1fd1f5c/dabojugukip.pdfIn PDF document text
- https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/8jnfaem2ugvtqh1eaki6uhe7hf/lebejevunoxom.pdfIn PDF document text
- http://ngor2-3.com/file_media/file_image/file/66241426525.pdfIn PDF document text
- https://businessservicesuk.com/userfiles/file/2703800515.pdfIn PDF document text
- https://protradingindia.net/userfiles/file/tivuvagakolumelenixafuna.pdfIn PDF document text
- http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/64094632667.pdfIn PDF document text
- https://www.wemservice.com/ckfinder/userfiles/files/suvowepewiw.pdfIn PDF document text
- http://citescolairedeledit.com/include/file/28588962208.pdfIn PDF document text
- https://anjingliar2.com/contents/files/botada.pdfIn PDF document text
- http://qianxish.com/ckfind_image/files/garirizovazorepa.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6e735376b---1273785213.pdfIn PDF document text
- https://atlantidegattico.it/file/90946918564.pdfIn PDF document text
- http://microcement.ua/userfiles/file/50505565817.pdfIn PDF document text
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606ee3d420e61---84486773653.pdfIn PDF document text
- https://alice-immo.com/userfiles/file/78367305380.pdfIn PDF document text
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16075e92a5609e---16098662183.pdfIn PDF document text
- http://praxis-greve-polley.de/web/editor/files/pikanazukefiduwajed.pdfIn PDF document text
- http://mfcwestenkwartier.nl/beta/userfiles/file/xipepajinanobimerolepono.pdfIn PDF document text
- http://coreaad.com/DreamDataUpload/file/lojex.pdfIn PDF document text
- https://baongochoa.com/upload/file/25773642450.pdfIn PDF document text
- https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/447ef667aff4c95d1cdb968344a9e42e/3725089653.pdfIn PDF document text
- https://pakianco.ir/data/image/uploads/news/files/mopug.pdfIn PDF document text
- http://chanakol.com/ckfinder/userfiles/files/kokamuketapiso.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=askep+ulkus+peptikum+pdfPDF link annotation
- 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_off000121e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121E0 | 10348 bytes |
SHA-256: 5c91f103a1475047cbfd72a034512def20a9148ac88c60b84a421ea91f2ddf0c |
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font_01_sfnt_off0001394a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1394A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001515c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1515C | 16860 bytes |
SHA-256: 261bfb4c2088f8f87bdf283b34f35ad8165e6e4e9ab57b187a5b705cc6827881 |
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