MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The primary attack pattern involves luring users to these external sites, which likely host phishing content or further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9929
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://crewmak.ru/uplcv?utm_term=combinatorial+game+theory+pdf PDF link annotation
- http://renovator.cz/files/file/26273224576.pdfIn PDF document text
- https://digireg.nz/upload/25024098628.pdfIn PDF document text
- http://debsluxe.com/clients/1/17/174397649ed9f07baa8f9d9f48c72a4d/File/51546363314.pdfIn PDF document text
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/4c334be1defc6cfe28d87fa6032ed9c2/4069711494.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebc5fd9bd0---guxalekudugolomofenimewi.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/41878345355.pdfIn PDF document text
- https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/b29k6uro2b3i71hso8t74d6cad/dalepiximevisaxewa.pdfIn PDF document text
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160abb66794337---lufadujazejobi.pdfIn PDF document text
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b2314078354---10701330924.pdfIn PDF document text
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/jjfg715hdme2grft68br2upeu8/37239413719.pdfIn PDF document text
- http://kimbuunguyen.com/uploads/userfiles/file/87554997729.pdfIn PDF document text
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160752344b96e1---14167938859.pdfIn PDF document text
- https://chungcungoaigiao.net/uploads/files/23159179712.pdfIn PDF document text
- https://morabia.fi/images/file/84319831868.pdfIn PDF document text
- http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/2666420843.pdfIn PDF document text
- https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/1f739637bd71b546698a6a5acc5955e2/witoduzulaxeredemuluzawiz.pdfIn PDF document text
- http://bahattinburyan.com/userfiles/file/9464507231.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ef30535b9---48027913052.pdfIn PDF document text
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/eda903922bad95e3d51e1be3739ae088/95332416500.pdfIn PDF document text
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/1hqephg3v0spdru1cjsujngois/31165740575.pdfIn PDF document text
- https://securitydm.com/slicice/file/muweparudetagilebonokir.pdfIn PDF document text
- http://accessprecision.com/userfiles/file/79985233479.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd53cb9614e---61098512970.pdfIn PDF document text
- https://jagamimpi.org/contents//files/39264011107.pdfIn PDF document text
- https://zanhotel.ro/beficientconsultingFiles/file/60263501010.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_off000117ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117EE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00013000.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13000 | 17948 bytes |
SHA-256: b4af2276d3f72b1fcccec8ed6afe605766f7fc5facba96501eb5bb21d87ece43 |
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font_02_sfnt_off00015e3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15E3D | 11060 bytes |
SHA-256: 1bf6e11b3bf9e08780264d37349155d38b7f296f51389b366f2a65a1b3650c1e |
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