MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file is identified as a malicious PDF by ClamAV, exhibiting characteristics of a link farm. Multiple heuristics indicate the PDF contains numerous links pointing to compromised websites and disposable hosting, which in turn serve other PDFs. This suggests a multi-stage attack designed to lure users to malicious content, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier clean score 0.2226
Heuristics 5
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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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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://tongchangkj.com/uploadfile/file///2021090810004710.pdf
- http://marsalanoleggio.it/userfiles/files/wipiraped.pdf
- http://hglobaltour.com/FileData/ckfinder/files/20210914_0A4466DF83B92629.pdf
- http://wowbond.com/upload/Fckeditor/file/pinunulebalumafeta.pdf
- https://girisimhaber.com/uploads/file/78889654438.pdf
- http://areopag-group.ru/sites/default/files/uploads/kiwisukazovamolibodusefob.pdf
- https://sanipro.ma/app/webroot/uploaderfiles/navijuzebuk.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16148fedd7e6f9---wupegapunaxezurukef.pdf
- http://szymonadamczyk.pl/uploads/fck/file/48445349206.pdf
- http://abwfinlay.com/uploads/files/jigusefojalelezanomo.pdf
- https://aglogistics-bo.net/userfiles/file/92265633245.pdf
- http://starma.pl/files/file/86617170265.pdf
- http://budohurtsa.pl/userfiles/file/banazonuj.pdf
- http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/30397956650.pdf
- https://jimsdelibrookhaven.com/demo/jimsdeli/admin/userfilesfile/povifurepi.pdf
- https://store-connector.com/_upload_bilder/_filemanager/file/4705280771.pdf
- https://holyfamilyhospitals.com/ckfinder/userfiles/files/96320843439.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/knspc7bmta8pcl3l5j4o71ndg6/fujibinatipun.pdf
- https://maviet.vn/upload/files/87934150961.pdf
- http://erbamedica.org/userfiles/files/jasanezazewobawer.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612f41239ed65---37829821583.pdf
- http://lsbwg.com/ckfinder/userfiles/files/20210907/1043454432.pdf
- https://www.educationsexuelle-ecole.ch/ck/ckfinder/userfiles/files/50647591685.pdf
- https://lrsinc.co/userfiles/file/nuxelasita.pdf
- https://cfbadalona.net/ckdata/files/fanusuk.pdf
- http://vyveva.eu/UserFiles/File/lizuvilotixosogotixiwasi.pdf
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16140afaa3e1c3---7447317395.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=outlook+android+activesync
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ccfc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCFC | 16792 bytes |
font_01_sfnt_off0000e50e.binccaacee3daf61596b150b10c6d977fced810a3d4e94c0265b7fe8823cebf7e4f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE50E | 23332 bytes |
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