MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The document body, though partially corrupted, contains references to 'cheatbook database 2021' and 'wkhtmltopdf', likely serving as a lure to entice users to click on the embedded malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://medvor.ru/uplcv?utm_term=cheatbook+database+2021+en+espa%25C3%25B1ol PDF link annotation
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a0287d35bc---lumuzuvugarev.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/bf758ba08e16ef52869f2991ebb795e8/xekidipegug.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/7a1ma5b927rdq8hiig5ub41fvk/tarigarasufos.pdfIn PDF document text
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/r7v237v8nrhbjesieuvehgkdbv/fogavurabu.pdfIn PDF document text
- https://anmimar.com/royal/userfiles/file/39044405793.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ea296ad82---28464936165.pdfIn PDF document text
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/5jvo6irg33gjqvtrjunvl5r3gq/koluzejilarasinimisif.pdfIn PDF document text
- https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/3a982bf209414ecedf7b7a4ce50353b3/44774647671.pdfIn PDF document text
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/df68828fd1723cf570a08553a57a84b2/dowiximozanud.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/lc3qvfssj1l43t000tjoeie54v/tezuzetonexuvavuwuseje.pdfIn PDF document text
- http://aps-mes.com/files/file/90594888496.pdfIn PDF document text
- https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/jmko9aa7q2thp669u61pt1c373/mapejebibevib.pdfIn PDF document text
- https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16084d466973f1---zojazafodikegemonum.pdfIn PDF document text
- https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/g9af7bcqkvh0luseap7tgk64m7/kegajademuwugiwepox.pdfIn PDF document text
- https://motelandratecuci.ro/userfiles/file/92779918267.pdfIn PDF document text
- https://agrilaui.com/userfiles/file/60330585402.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d471.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD471 | 5596 bytes |
SHA-256: fc0899c363284b278a96351a9317c99b83cb81f6625092c9b306672f843fffa5 |
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font_01_sfnt_off0000e728.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE728 | 9988 bytes |
SHA-256: ad2d9e6877f8d9943e1b3c8ea11da727154ac0807c669acb45ff5d07fa67dbcb |
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