MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs that function as a link farm, directing users to other PDF files hosted on various domains. Several heuristics indicate this is a link farm on disposable or compromised hosting, with ClamAV detecting it as a phishing trojan. The ML classifier also strongly flagged it as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
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://inks.bg/userfiles/file/doposasusasofebigoda.pdf
- https://angelsforwarriors.org/userfiles/files/valerobijugemusesif.pdf
- https://solucionaesp.com/ckfinder/userfiles/files/24318959465.pdf
- http://zhatuogz.com/uploadfile/file/81527186441.pdf
- http://www.ondebiz.com/userfiles/file/gozarimitiwev.pdf
- http://robwalker.net/fckupload/file/41871815229.pdf
- http://ulleungroadtour.com/FileData/ckfinder/files/20210905_F797203138959A44.pdf
- https://www.sophrologue-nimes.fr/upload/news/files/kogalalidideputajet.pdf
- https://hyundainhapkhau.vn/upload/files/defevotakefipufufanodivap.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612feb8b3202c---31955920168.pdf
- https://escolaalfa.com/userfiles/file/gupobonesatefewawelabujev.pdf
- http://systempro.kr/userData/board/file/35703255312.pdf
- https://djennebeads.com/nbloom/fckuploads/file/62629659822.pdf
- http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/warogafuvituka.pdf
- http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/20661030734.pdf
- https://alternatifhirdavat.com/upload/ckfinder/files/larubinigufemug.pdf
- http://nsdadventist.org/FCKData/file/18402306698.pdf
- https://harom.ro/files/file/68370417763.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161327da56fe67---3066539504.pdf
- http://msslink.ru/userfiles/files/54830297138.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b84e82abec---wised.pdf
- http://orzo.cz/uploaded/files/92765323141.pdf
- http://euro520.net/userfiles/file/16321516391493876836.pdf
- https://booknowrentalimo.ch/userfiles/files/zavoderez.pdf
- http://gearcon-eng.com/file_media/file_image/file/winutexubutafamiliruwimef.pdf
- http://8njl.com/userfiles/files/58296163623.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=set+it+up+watch+online+with+subtitles
- 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_off0000b1bd.bin89b695574c85dca3d517dd4cbecadb6e74ab8d64e4e41ee8b1600660be90c308 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1BD | 10772 bytes |
font_01_sfnt_off0000ca4c.binf20b9b085b4f17b3df061aa18719618df744fb9ba9aa195468810a3277a6fa82 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA4C | 15660 bytes |
font_02_sfnt_off0000f224.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF224 | 16792 bytes |
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