MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggest a link farm designed to redirect users to malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate attempt to obscure the final malicious destination. No scripts were extracted, but the overall structure and URL patterns strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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=how+to+connect+remote+to+mi+box PDF link annotation
- http://www.mueblesgamez.com/ckfinder/userfiles/files/19949245506.pdfIn PDF document text
- https://studiovizia.com/webroot/img/content/files/bavakokesim.pdfIn PDF document text
- https://youxsoft.com/uploads/files/vusol.pdfIn PDF document text
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614095241d2dd---55135316057.pdfIn PDF document text
- https://istanajp.com/contents/files/78606702122.pdfIn PDF document text
- https://inks.bg/userfiles/file/4997003426.pdfIn PDF document text
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614253dd475da---46639692580.pdfIn PDF document text
- http://arrhythmiaclinic.com/userfiles/file/20210909075845.pdfIn PDF document text
- http://noithatsah.com/webroot/img/files/20413501405.pdfIn PDF document text
- http://flexinform.com/hirlevel/file/66366268965.pdfIn PDF document text
- http://donateagift.eu/userfiles/file/5598808849.pdfIn PDF document text
- https://floridainvestment.cz/files/file/sarej.pdfIn PDF document text
- http://imosa.asia/uploads/files/202109052154173967.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a5bbe4bd07---rurufadomupefor.pdfIn PDF document text
- http://flexa.cz/docs/file/koxuxarakutu.pdfIn PDF document text
- http://aprt1day.ru/file/66413368843.pdfIn PDF document text
- http://harposwebdesign.nl/app/webroot/files/userfiles/files/dakaxakome.pdfIn PDF document text
- https://vico-inmobiliaria.com/ckfinder/userfiles/files/49572498136.pdfIn PDF document text
- https://cauthinh.com/luutru/files/93558014179.pdfIn PDF document text
- http://firewheels.pe/userfiles/file/1510891155.pdfIn PDF document text
- http://fecirturizm.com/resimler/files/lipozuwurevekozobot.pdfIn PDF document text
- http://prtourusa.com/FileData/ckfinder/files/20210909_69622BA7B7F44EF7.pdfIn PDF document text
- http://df-2.de/images/daten/file/75165661823.pdfIn 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000da14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA14 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f226.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF226 | 16720 bytes |
SHA-256: 4e4047f54d400ce3783fa34beead2c6bc000f995f7bec5a484e0546d7d411c0b |
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font_02_sfnt_off00011d11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D11 | 10336 bytes |
SHA-256: e962398ebaf305d6d5df28939ea0cd6eaacf4d5272c4a6b99d1368a854cce3af |
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