MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains multiple external URIs and is flagged by heuristics as a link farm pointing to compromised WordPress upload storage, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a second-stage payload via the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://crysiq.ru/uplcv?utm_term=leonard+cohen+hallelujah+piano+sheet+music+pdf PDF link annotation
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830b9f4b06f---89580558971.pdfIn PDF document text
- http://www.contectrade.hu/fckfiles/file/84362458259.pdfIn PDF document text
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/4b075d79fae5ed2b51a9f331d698bb91/33396516834.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/60ja2dpcnbseeslh71b37rq9c5/30681006076.pdfIn PDF document text
- http://minerva-collection.net/files/files/57467857099.pdfIn PDF document text
- https://haidangpc.com/contents/files/77970563651.pdfIn PDF document text
- https://consjurist.ru/uploads/files/wenenagasi.pdfIn PDF document text
- http://kurskodkb.ru/page_edit/_samples/userfiles/files/jofafipaw.pdfIn PDF document text
- http://studiogiamberardino.it/userfiles/files/tuzutarujapelifet.pdfIn PDF document text
- http://jiangsutravel.kr/userfiles/files/20210607_015545.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/528a9ac045066c3bfe932b37ebe8c31b/35800153210.pdfIn PDF document text
- https://rijst.nu/userfiles/file/51247154983.pdfIn PDF document text
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a188c0afa0c---kagofos.pdfIn PDF document text
- http://elateridae.com/images/FCKeditor/file/32890552406.pdfIn PDF document text
- http://csptech.net/admin/userfiles/file/lofazawugolajajarafitigow.pdfIn PDF document text
- http://au-zlato.sk/upload/files/rokulevasavowesina.pdfIn PDF document text
- http://andrewclaymonfishing.com/clients/a/a7/a7b0d980ee28df7184f998a87a00dbd5/File/rumakowixaxusa.pdfIn PDF document text
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/968f5114b2d57a40f6838354e94fead9/kolib.pdfIn PDF document text
- http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/97951225913.pdfIn PDF document text
- https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/007aac5ec1b8dd5ffd1180f5b330764e/wijiruwuwudiw.pdfIn PDF document text
- http://thaimassageboy.com/ckfinder/userfiles/files/1731730103.pdfIn PDF document text
- http://cuboni.com/uploadfile/hong202106090909452697.pdfIn PDF document text
- https://emilline.dk/ckfinder/userfiles/files/rolarevafi.pdfIn PDF document text
- https://kodcomputers.ro/2664/uploads/43439680890.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/6a4c9f9c58b7c8c28491a98b938f9ec8/2147419712.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_off0000f84d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF84D | 17408 bytes |
SHA-256: 061f4363fdf2f25f4405584e5bb577c9e41eeac95503e62efcaa22174bb03540 |
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font_01_sfnt_off000125c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125C8 | 11072 bytes |
SHA-256: fa0240addc495c9a5e833f3467a451fb023b093a9fd5342827f1eeff97a84e64 |
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font_02_sfnt_off00013f4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F4A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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