MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to external websites. Several of these URLs are hosted on compromised WordPress sites, suggesting a tactic to leverage potentially trusted domains for malicious redirection. The document body is heavily obfuscated and unreadable, providing no direct content clues.
Machine Learning
- Nyx PDF Classifier malicious score 0.5548
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 https://noihoithanhtuan.com/media/ftp/file/47976893660.pdf In PDF document text
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/97f984d9216572a4cadd0d94004b8460/kubojowawopibafubav.pdfIn PDF document text
- https://tsydesign.com/userfiles/jws/files/4182624917.pdfIn PDF document text
- https://xaydungdonggia.com/app/webroot/files/images/pages/files/12559476663.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/a6405cf032d74d21edcd6b267abec8d8/famufefajuvivoxilisokat.pdfIn PDF document text
- https://atraba-holding.com/userfiles/file/detiresijefubirutawabavom.pdfIn PDF document text
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/4543afef8c9039c0c6adb15af9790ecd/fiwufajesozubapofubo.pdfIn PDF document text
- http://ms-krmelin.cz/app/webroot/files/files/4976529635.pdfIn PDF document text
- http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b1c385236---vevazofokamuxilo.pdfIn PDF document text
- http://texmet.pl/userimages/file/83494572847.pdfIn PDF document text
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/skcmbo73kku4m1c4lp33o6tt2u/digafajep.pdfIn PDF document text
- https://ajansnigde.com/resimler/files/70808337605.pdfIn PDF document text
- https://alshamiltrading.com/alshamilfiles/file/90099034516.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/5360568760.pdfIn PDF document text
- https://rarahil.org.np/ckfinder/userfiles/files/47821748995.pdfIn PDF document text
- http://enricobarraco.com/files/65790708560.pdfIn PDF document text
- https://hardlineconstruct.ro/app/webroot/files/userfiles/files/bowojikawejejudopaf.pdfIn PDF document text
- http://marathon-gexin.com/Uploadfiles/files/4085040831.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607887e344337---9616506275.pdfIn PDF document text
- http://wedooverseas.com/userfiles/file/68102205373.pdfIn PDF document text
- http://bkdesign.ee/userfiles/file/wasut.pdfIn PDF document text
- http://ytbozhuo.com/upload/file/250311593198.pdfIn PDF document text
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160746373b1916---49691448459.pdfIn PDF document text
- https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/9fdf6e00248b6e110a21e022207c5324/3600914570.pdfIn PDF document text
- https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16083988bcb33f---81505509392.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a78d349e952---bimuvipapisevizitir.pdfIn PDF document text
- http://hopkinshigh1988.com/clients/75739/File/fanokeb.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=can+you+increase+your+amh+levelsPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f5d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5D6 | 10708 bytes |
SHA-256: d109aeea8941a6c8804eeecd1691ca1be7d91112cc73fd5fcf3f489e5d5137e0 |
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