MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URI links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic further support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.5871
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://nomylo.ru/uplcv?utm_term=how+to+change+name+on+lock+screen+android PDF link annotation
- https://anzhero-sudzhensk.verlauf-ekb.ru/admin/ckfinder/userfiles/files/26849970627.pdfIn PDF document text
- http://xnucleus.com/members/member_images/files/34933140666.pdfIn PDF document text
- http://fanta-life.com/userfiles/file/givuwogetujopupaf.pdfIn PDF document text
- http://bjsixiang.com/jingkelun/userfiles/files/20210908201905.pdfIn PDF document text
- http://irina-beha.com/ckfinder/userfiles/files/sujesagezojuxanupafeju.pdfIn PDF document text
- https://confeccionesruiz.cl/UserFiles/File/balugupazifozofefume.pdfIn PDF document text
- http://koreaseals.com/ckfinder/userfiles/files/gugidinoratodowonow.pdfIn PDF document text
- http://compow.net/ckfinder/userfiles/files/vibividumewomofir.pdfIn PDF document text
- https://pnp-studio.com/fckeditorfiles/file/11054978846.pdfIn PDF document text
- https://tspinstruments.com/cache/fck_files/file/43656298644.pdfIn PDF document text
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144319e1325c---26380144270.pdfIn PDF document text
- https://interior-mark.com/ckfinder/userfiles/files/sobexusuwesaxavilufakogo.pdfIn PDF document text
- http://uat2.hkha.com.hk/ckfinder/userfiles/files/36561985713.pdfIn PDF document text
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/m1r4407fmft5na0tif3ev9rs96/zijazudusaduwevejeni.pdfIn PDF document text
- https://vzglavniki.net/data/file/tifiloxevatemanitela.pdfIn PDF document text
- http://alhouti.com/userfiles/file/41450860931.pdfIn PDF document text
- http://canshu.dlzj.net/upload/files/20210917081541261932.pdfIn PDF document text
- http://ecofincas.net/ckfinder/userfiles/files/vezakexe.pdfIn PDF document text
- https://dorfadvertising.com/ckfinder/userfiles/files/8236486890.pdfIn PDF document text
- https://nikoljski.com/ckfinder/userfiles/files/rubuvakupolafun.pdfIn PDF document text
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16147bec34aec8---vopuladiwunetazidumujil.pdfIn PDF document text
- http://hissekurban.com/resimler/files/fiwufijupokogo.pdfIn PDF document text
- http://crisismobile.com/ckfinder/userfiles/files/16231915318.pdfIn PDF document text
- http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/zewenoperejubepogujoji.pdfIn PDF document text
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613a52c083b70---45566051700.pdfIn PDF document text
- http://rucodelniza.ru/userfiles/file/pejivununewate.pdfIn PDF document text
- 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_off0000d90a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD90A | 17452 bytes |
SHA-256: a2b436773238ffb352738575e0f2ee5e5ef1d0d80099f9b56e9aaa33c656ef51 |
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font_01_sfnt_off00010601.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10601 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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