MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of hosting malicious content on potentially compromised or low-reputation sites. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 http://apisicul.com/userfiles/files/60209470084.pdf
- http://hamdard.com/hamdard/app/webroot/img/ckfinder/userfiles/files/71763013502.pdf
- http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/44985646089.pdf
- https://phatgiaolongan.com/upload/ckupload/files/xovukidutavuxapowepox.pdf
- http://bcslaw.hu/admin/fck_upload/file/jepemavaxedefetopatutuda.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6d622af01f---pagegezobon.pdf
- http://mimarkamilozkartal.com/userfiles/files/rufitijekapututa.pdf
- http://meble-tk.pl/userfiles/file/ronutefodudibujep.pdf
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160b005bfc6af3---pesupovosizoki.pdf
- http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/916544509.pdf
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/a7f670afabd56c11cb6597a8b3892e30/wixuxumidezas.pdf
- http://business-plan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/zozulalotekubafo.pdf
- https://digitaldaya.com/imagenes/file/sekonufuwezisozojoberolat.pdf
- https://emtracing.net/userfiles/file/26213739392.pdf
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7c1413ee34206700b22a56792abd8c63/95760303402.pdf
- http://dush-kz.ru/uploads/fck/file/6024209109.pdf
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d1b4d5c5b---74440392291.pdf
- https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/12449183024.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5320068ef8---77686589344.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a20ed63a0d1---34377205328.pdf
- http://phongthuydotho.vn/upload/files/zajupasiduborivegixuwigu.pdf
- https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/2097276253.pdf
- http://sxsasa.org/images_fck/file/1629049604.pdf
- https://brickbodysupplements.com/newerac2c/userfiles/file/nepil.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=chapter+6+formulating+strategy+pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b9c7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9C7 | 16792 bytes |
font_01_sfnt_off0000d1d9.bina7c48b8a90452bf394e11bb854754d7a09cf059c5a8af4b0d4561567874822c8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1D9 | 15700 bytes |
font_02_sfnt_off0000f95f.bin1159a4ae2dca67194952906bd309f7a5ba123a7c5dea504d9b0d20eeba3cf5c7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF95F | 11356 bytes |
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