MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics indicate the PDF is part of a link farm, directing users to compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs and the nature of the heuristics strongly suggest the PDF is intended to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://synerhu.ru/uplcv?utm_term=stop+notifications+android PDF link annotation
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/1cf45a5cbf4e04e6fd3ed3adc7321170/kepovu.pdfIn PDF document text
- http://spprp.pl/userfiles/file/38456756838.pdfIn PDF document text
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140b75dc2086---fumilutizarewizi.pdfIn PDF document text
- http://bkm-market.net/userfiles/file/83626395145.pdfIn PDF document text
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/161338e092f025---6793999008.pdfIn PDF document text
- http://geometramaurotozzi.it/userfiles/files/23003919156.pdfIn PDF document text
- http://avandcie-energy.fr/ckfinder/userfiles/files/lelikojupi.pdfIn PDF document text
- http://pusancard.com/userData/board/file/24985159731.pdfIn PDF document text
- http://soft-pro.hr/upload/datoteke/dugitazofeviginubipuf.pdfIn PDF document text
- http://kodemari.info/data/files/4950012881.pdfIn PDF document text
- http://ljsmelt.com/upload/files/fudonopewikaxodosorax.pdfIn PDF document text
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/6986753627769317e529d6efb70644ba/posej.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161307e8547665---84735049326.pdfIn PDF document text
- http://lasermedia.cn/userfiles/file/69444417535.pdfIn PDF document text
- http://zoldjogsi.hu/uploads/files/38458928080.pdfIn PDF document text
- https://nevisnews.com/userfiles/75967738770.pdfIn PDF document text
- https://lwim-ouargla.dz/ar/files/niduxefobar.pdfIn PDF document text
- https://bacninhonline.com/webroot/img/files/falazipunemefidap.pdfIn PDF document text
- https://sukaunited4d.vip/contents/files/weninuzemuxejevesizuxet.pdfIn PDF document text
- http://dlevitin.ru/fck_editor_files/files/nulikameboma.pdfIn PDF document text
- http://elai.kz/upload/2021/09files/210914112834613181bvzce.pdfIn PDF document text
- http://gocchame.vn/app/webroot/img/uploads/files/nuwabuluwijaxibuwibujofu.pdfIn PDF document text
- https://millvalley.com/wysiwygfiles/file/poxidujakefaxuwe.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_off0000dc34.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC34 | 10512 bytes |
SHA-256: 99b275648283ec8b042f32cc659e89602bd5341b5576c4f2a1ef6abc7a04e808 |
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font_01_sfnt_off0000f43b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF43B | 18224 bytes |
SHA-256: c8a5af1ab410212821c4643008b7e4e40210f34403b6b4fe199de40223002bd5 |
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font_02_sfnt_off00012326.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12326 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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