MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is a PDF detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing.
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://smidgel.ru/uplcv?utm_term=human+anatomy+and+physiology+textbook+2nd+edition PDF link annotation
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/450a139e9b05da89e8e02d05d7b51dd1/goxepeburavul.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f1000bca2---wufatepiparawepudegedirox.pdfIn PDF document text
- http://dongphuctqueen.com/upload/files/32880483791.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/78653270149.pdfIn PDF document text
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/gb95piaf2kri7jakqgo87qpui2/joberebonoguwumesafem.pdfIn PDF document text
- http://dnepropress.net/files/file/66662719479.pdfIn PDF document text
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/a12868435a9d917b16abdaf08db3ee60/meziduv.pdfIn PDF document text
- http://capitaloffice.pl/fotki/file/ribifexalepato.pdfIn PDF document text
- https://bimstudioinc.com/media/files/ganujit.pdfIn PDF document text
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607adf2e2b422---22801581972.pdfIn PDF document text
- http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609ffcf131478---93453739385.pdfIn PDF document text
- https://stallion-international.com/userfiles/file/wolorawuxisujonamewabojar.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbf3940c04b---20855217455.pdfIn PDF document text
- https://activepymes.com/pub/file/5733077422.pdfIn PDF document text
- https://stka.gr/ckfinder/userfiles/files/bagowezofoke.pdfIn PDF document text
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f58dbbe926---wedogo.pdfIn PDF document text
- http://xz-brand.com/ckfinder/userfiles/files/pipafotawemonog.pdfIn PDF document text
- http://kco.su/userfiles/file/6916391303.pdfIn PDF document text
- http://influences-vegetales.eu/assets/Image//files/91754065007.pdfIn PDF document text
- https://gimenezricarte-deltabogados.com/ckfinder/userfiles/files/30400334775.pdfIn PDF document text
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/dc7ade06bb2db6b16d8fca5c6586d804/jigebamagajipixevawe.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2400a3dec8---kibegubaj.pdfIn PDF document text
- http://www.alexgis.com/siteuploads/editorimg/file/venil.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_off0000e570.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE570 | 15688 bytes |
SHA-256: a281b9086f8b7c0a6764bb7852e3307ffbc5c97140d66aeb232a31a8f4b6f332 |
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font_01_sfnt_off00010de3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DE3 | 11400 bytes |
SHA-256: 5801985362edd68aa711674448fb23fe8c15c1070846b16975a8ac574e607f1c |
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font_02_sfnt_off00012839.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12839 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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