MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and link farm characteristics points towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.6872
Heuristics 5
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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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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://bephoangdung.vn/uploads/ckfinder/files/12850088566.pdf In PDF document text
- https://suprizpin.com/calisma2/files/uploads/62618035640.pdfIn PDF document text
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/0a1c8eeeac2692c1187611658f1bfdfc/31192131823.pdfIn PDF document text
- http://futurepoolandspa.com/ckfinder/userfiles/files/55872910120.pdfIn PDF document text
- http://shsclassof1959.com/clients/a/a7/a7a82b2a6025f7fafce5d77be70bf845/File/xosukegumozerubixed.pdfIn PDF document text
- https://quatcongnghieput.com/uploads/files/71293677337.pdfIn PDF document text
- https://swagath.co/new/ckfinder/userfiles/files/tijalunutosorisik.pdfIn PDF document text
- http://nbc.com.vn/ckfinder/userfiles/files/tulowonigovuf.pdfIn PDF document text
- http://zuszdounky.cz/files/58846488406.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/firawatuvole.pdfIn PDF document text
- https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/3nr8fih7dfiq7mf7pc7d03r9pn/vivizufote.pdfIn PDF document text
- http://swissies.lt/ckfinder/userfiles/files/mevofokewofekor.pdfIn PDF document text
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/13379555743.pdfIn PDF document text
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160984d946b373---vodumoliraliwu.pdfIn PDF document text
- https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160dc08e7a0c1c---gododez.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b70c19ef2---fezijas.pdfIn PDF document text
- https://aarhuskortet.dk/images/file/38320873553.pdfIn PDF document text
- https://rinducm1.com/contents//files/zozuwegoj.pdfIn PDF document text
- http://daiichilogistics.com/uploads/news_file/85598367155.pdfIn PDF document text
- http://ayrh.internet-match.com/upload/files/98403498959.pdfIn PDF document text
- http://zhuoer.ltd/userfiles/file/nusevutodijufug.pdfIn PDF document text
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/91786dccb4ff943069d7713178dca620/regivosu.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/b03662e89630b7c8d0775a59334612bc/bulurajemujibududewewevi.pdfIn PDF document text
- https://seikai.jp/free_images/files/widinovilefek.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=decoding+words+grade+1+worksheetsPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c913.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC913 | 10836 bytes |
SHA-256: c5b18614ec1da4bd29c3f2c8a776112ba11daf1815949219de5aa596ab19263a |
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font_01_sfnt_off0000e1f1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1F1 | 17580 bytes |
SHA-256: 2de063336e8e6dd58c0f5fea85e883a784ed2af99ef4c7cd42e30a2f31161cfa |
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