MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to redirect users. The ML_NYX_PDF_MALICIOUS heuristic and ClamAV detection strongly indicate a malicious intent, likely to exploit vulnerabilities or lead users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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://primax.fr/wp-content/plugins/super-forms/uploads/php/files/esj5c5mp9pa865fejcsp0mi850/manivikovuvida.pdf In PDF document text
- http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/funetesaropabovebegowu.pdfIn PDF document text
- http://longchimvac.net/app/webroot/uploads/files/zekajugimovodukomojigefub.pdfIn PDF document text
- https://aulacvn.com/upload/fck/file/xafejodavi.pdfIn PDF document text
- http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16075ef298237e---ginuferesiwuvetadate.pdfIn PDF document text
- http://xyr59.com/filespath/files/20210807030056.pdfIn PDF document text
- http://dochoiotovn.com/uploads/userfiles/file/12407434807.pdfIn PDF document text
- http://vattucongtrinh.com/userfiles/file/vojixekiv.pdfIn PDF document text
- https://ezokniga.com/uploads/file/95793598633.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/1dad216e5d47e447e453102273bedf76/73517838957.pdfIn PDF document text
- http://police8coop.com/UserFiles/file/wimagerim.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/574a91e75018165fb25294ec3c1f6ebc/rupogorokosi.pdfIn PDF document text
- http://cesurmakina.com/userfiles/file/tuwugiko.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b8f8b13893b---xoxuzo.pdfIn PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/720de0dfb90b3990780ba4626a7f6833/543200421.pdfIn PDF document text
- https://genegurumiraclehealer.com/userfiles/file/julisejofanatobofez.pdfIn PDF document text
- https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/605e0bef896962ead2677f9a00e6d90d/nidosovibew.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=vocabulary+building+exercises+for+adults+pdfPDF link annotation
- 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_off0000dcdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCDC | 18648 bytes |
SHA-256: 83b9ef9bdff9203a5240f2b0bb1d0cbf6d6a570c6af86bc16676be1114c7bd37 |
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font_01_sfnt_off00010ce8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CE8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000124ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124FF | 11220 bytes |
SHA-256: c511dc6e512379604ad398f388b9ba5f5ec9254c39a5f421d32421178a844ddc |
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