MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://crewmak.ru/uplcv?utm_term=sap+pm+certification+questions+and+answers PDF link annotation
- https://tedvandergulik.nl/userimages/file/65666868274.pdfIn PDF document text
- http://bulmarconsult.com/files/nasis.pdfIn PDF document text
- https://pharmnet.cz/ckfiles/files/files/7599011059.pdfIn PDF document text
- http://chroscina.com/userfiles/file/33271509850.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/72826ad20f1777a96b5b39176b9f5619/9492570861.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079388edd5e5---14355610505.pdfIn PDF document text
- http://jtylek.pl/Upload/file/siburaxozewir.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/4b465bbecd52ff82698f0d3a6c34afbc/71934592372.pdfIn PDF document text
- http://topcudental.com/img/userfiles/files/sizadawuxi.pdfIn PDF document text
- https://alakharia.com/public_html/userfiles/file/20932054944.pdfIn PDF document text
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160948ed5624a6---limuteso.pdfIn PDF document text
- http://stlukesmn.org/clients/17773/File/marevovivixinesebi.pdfIn PDF document text
- https://harkakotony.hu/UserFiles/file/pemiduwoxu.pdfIn PDF document text
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/160af96fc1f931---5597222643.pdfIn PDF document text
- https://kodcomputers.ro/2664/uploads/bepezagotetizekarogo.pdfIn PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc77c8b05a5---77739187618.pdfIn PDF document text
- http://www.advokat.com/app/webroot/img/fck/file/zovaxete.pdfIn PDF document text
- http://vodnik48.ru/content/file/74042010971.pdfIn PDF document text
- https://juniorclublivorno.com/sitonews/images_upload/files/xetaguwaxafa.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/68834ae8e8100639b49adc9e89307138/39606495224.pdfIn PDF document text
- https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/2f11222adb1e6306df4a77b75f65aa23/27233923226.pdfIn PDF document text
- http://china-zzld.com/uploadfile/file///2021062122305113.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_off0000be05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE05 | 15652 bytes |
SHA-256: 34909ba9180ccfad172d0476f79fa115776127fa67a485b58f0298a8541eb04b |
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font_01_sfnt_off0000e622.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE622 | 11140 bytes |
SHA-256: 7f14ad00e366bb724c22b46df8461dd90e2858acdaeedfad790b1deb52be632d |
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font_02_sfnt_off0000fffb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFFB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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