MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/coi94onvtakqa488tmupp9hghr/16079827616.pdf In PDF document text
- https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/8177cfa00eac9263b8af6462afdc6133/25736035508.pdfIn PDF document text
- https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/0bd6975dbc1568daf17a359592624d53/15610358145.pdfIn PDF document text
- http://pumarecovery.com/userfiles/files/8269712586.pdfIn PDF document text
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/be7cbd0130ed27e61fb08c0987238f17/94582359476.pdfIn PDF document text
- http://www.zaluziemalina.cz/userfiles/file/57446608038.pdfIn PDF document text
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/bc620c5f0247aee7ecadce1f07368fe6/37713737915.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/t37mm7am04bhbmjj0qc5r22ua7/37567568289.pdfIn PDF document text
- http://kinel-hunter.ru/upfiles/file/diferezinod.pdfIn PDF document text
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf99de8e29---rijexowovu.pdfIn PDF document text
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/8c5464a823ba322086b8ec3fdc10043c/32041648276.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a8ee68e0e---gusajun.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c975a2c62c5---63703959744.pdfIn PDF document text
- https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c289a215678---xagofi.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=dheere+dheere+bol+koi+sun+na+le+djPDF 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://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_off0000b0ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0AE | 5192 bytes |
SHA-256: 90ccf13ca411c5c0bc2583de53e8b00ecef228465d83bb2b66e10f00fc40375e |
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font_01_sfnt_off0000c24e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC24E | 9992 bytes |
SHA-256: 4a6e7503936cc3d2c862aa42e62e6024919dc66602c694339539f562158b9c9c |
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