MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating it is a link farm and points to compromised WordPress upload storage, suggesting it's used for distributing malicious content. The embedded URLs, such as 'https://infrive.ru/uplcv?utm_term=rainbow+six+siege+best+starter+operators', are designed to trick users into visiting potentially harmful sites. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware delivery.
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://infrive.ru/uplcv?utm_term=rainbow+six+siege+best+starter+operators PDF link annotation
- https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a891d13a1a3---kebosolozuxudijafobib.pdfIn PDF document text
- http://szentistvanpatika.hu/upload/file/64603773856.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/seg04j517q8pfbig3u4e4361to/sutozafibogukofimi.pdfIn PDF document text
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/aa8ea127f62018b33b8730a3cae4ffb2/50675464856.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6993543c4---97631595994.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/fa51sm4bmrv7ss9jv074ishal0/68113408882.pdfIn PDF document text
- http://www.anclupnapoli.it/userfiles/file/fitedogitorolorega.pdfIn PDF document text
- http://toyotarent.kr/FileData/ckfinder/files/20210528_CFCAE280CE34096B.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071a4ce9482c---sapuw.pdfIn PDF document text
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/f2aac7a2629708861fa69b9513809299/fixedategipusez.pdfIn PDF document text
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/313ed98818130c7b0993183a01452cd6/21884600593.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2fb234851d---65128282350.pdfIn PDF document text
- https://wendi101.com/userfiles/file/rajumodatojojajew.pdfIn PDF document text
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1609d37e47ea00---zugiwolilosakivuzap.pdfIn PDF document text
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/1h34jmli9kg8uhr2mpeoieuaoi/nurigazurofobejimemor.pdfIn PDF document text
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/16074492b09c05---sedefapuvafeve.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_off0000eb9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB9F | 5264 bytes |
SHA-256: 581b65043e80309bf1df2ed4e9be44cf22ce9cc7d40f4f74f20865c26214aa14 |
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font_01_sfnt_off0000fdaf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDAF | 10668 bytes |
SHA-256: 817fe4335da192bb349db3ea00416ebc1d4fe74f580d421143cccd930ceaeadc |
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