MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate this PDF is likely a lure for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9882
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://krisoc.ru/uplcv?utm_term=%D8%AA%D8%AD%D9%85%D9%8A%D9%84+%D8%A7%D8%AE%D8%B1+%D8%A7%D8%B5%D8%AF%D8%A7%D8%B1+%D9%85%D8%A7%D9%8A%D9%86+%D9%83%D8%B1%D8%A7%D9%81%D8%AA+%D9%84%D9%84%D8%AC%D9%88%D8%A7%D9%84 PDF link annotation
- https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/d04c35f01f51449f4925759f938d2134/fupomagufim.pdfIn PDF document text
- http://hevolta.com/upload/file/4203345710.pdfIn PDF document text
- https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5d40acf27---90689426106.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160773d8612db0---bewazejotiki.pdfIn PDF document text
- http://sanarina.de/ckfinder/userfiles/files/66991111998.pdfIn PDF document text
- http://kidsjeodo.com/images/files/rudobipexidox.pdfIn PDF document text
- http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/fimotifepo.pdfIn PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/8812800596a27b9d2722e48bf4c14eec/87971180595.pdfIn PDF document text
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/2fa6c634a34b3ce81bb71b507049f38c/51682903063.pdfIn PDF document text
- http://shqinze.net/admin/upimg/file///vogupezijoxaselapagebobov.pdfIn PDF document text
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ctvtr4d0e658er2alcl228efk6/zugavivevovolijozosa.pdfIn PDF document text
- http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160819042eae3d---jesasujapetuviz.pdfIn PDF document text
- http://chamdure.com/DATA/files/bidutalowizifebikamovu.pdfIn PDF document text
- https://vanvoorst.info/uploaded/file/29788721272.pdfIn PDF document text
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/7cc86eaf1473132615ff30cb704ad279/191630001.pdfIn PDF document text
- http://mqskin.com/luutru/files/gaxuvanaz.pdfIn PDF document text
- https://mfdesign.hu/files/file/9360675288.pdfIn PDF document text
- https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ceba7fa8417---86348812969.pdfIn PDF document text
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608461101c3aa---21009069058.pdfIn PDF document text
- http://www.emailposte.com/pictures/67361671307.pdfIn PDF document text
- http://nagymester.com/userfiles/file/40442934111.pdfIn PDF document text
- http://henri-ruch.ch/doc_pub/file/nomigaror.pdfIn PDF document text
- https://retake.dk/ckfinder/userfiles/files/1589977590.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_002_off00011154.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x11154 | 33204 bytes |
SHA-256: d8b4c5ab2b98d4c7ea4ccfe4448089bde797ff79e25ab8329e593f6320f97e2e |
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font_01_sfnt_off00014aed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14AED | 19400 bytes |
SHA-256: 0ef72b91ebaf959d40b4841a0853387a8ecc575eb550d37130f94ec439ad7148 |
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font_02_sfnt_off00016b0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16B0F | 8984 bytes |
SHA-256: 1155eef8b03fb48db8196c62fe92ea0367c3129ef5e52290f3da045cb9446085 |
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font_03_sfnt_off00017d3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17D3B | 14588 bytes |
SHA-256: 31fb1fcfe808acc15af0835a11b20bb1f672bc790e4519f24d7e0df1c8481110 |
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