MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1204.002 Malicious Link
The PDF contains embedded JavaScript and external URIs, indicating it is designed to execute malicious code and redirect users. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to download a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://cructi.ru/uplcv?utm_term=is+4+composite+number PDF link annotation
- https://nexusmediation.nl/files/94887918214.pdfIn PDF document text
- https://egca.fr/userfiles/file/davoboregabodeti.pdfIn PDF document text
- http://termocity.by/pics/files/midoxesamoxalezerejebova.pdfIn PDF document text
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16130e4b097beb---peselol.pdfIn PDF document text
- http://aal.tw/uploads/htmlupload/files/67703044781.pdfIn PDF document text
- http://soleilboo.com/images/uploads/files/xigunizasuziv.pdfIn PDF document text
- http://trustycctv.com/ckfinder/userfiles/files/nebuzutozosazep.pdfIn PDF document text
- http://www.tobywells.org/media/fckdir/file/lomirafarerov.pdfIn PDF document text
- https://thuanxuongmonmb.com/admin/webroot/upload/image/files/60213677492.pdfIn PDF document text
- https://alkalacarservice.com/public_html/userfiles/file/pepas.pdfIn PDF document text
- http://diamant-x.sk/UserFiles/file/6755593095.pdfIn PDF document text
- http://twsl.mingann.info/upload/ckfinder_temp/files/20210904090544.pdfIn PDF document text
- http://sanarina.de/ckfinder/userfiles/files/wavakodesegileraxen.pdfIn PDF document text
- https://suksesunited.com/contents/files/89241340747.pdfIn PDF document text
- http://trustarshida.co/cache/fck_files/file/rekojepukemonoredip.pdfIn PDF document text
- http://share-world.tw/userfiles/file/bedogukigemegonuv.pdfIn PDF document text
- http://regalmotors-jp.com/js/upload/files/88721818472.pdfIn PDF document text
- http://tingchucontrol.com/Uploadfiles/files/tapefuvu.pdfIn PDF document text
- http://leeclinic.kr/userData/board/file/51118120965.pdfIn PDF document text
- http://ovecollection.com/royal/admin/images/products/file/24835428828.pdfIn PDF document text
- http://tsrmmessina.it/userfiles/files/45046626927.pdfIn PDF document text
- https://eirai.org/editor/ckfinder/userfiles/files/5147545923.pdfIn PDF document text
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613b8fa94e5e4---8410873116.pdfIn PDF document text
- https://kuzeyilac.com/resimler/files/defuwiva.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_off0000d262.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD262 | 17372 bytes |
SHA-256: 52dd4c31702542f94da8e6744db4e53841c3ff69a541be29c859330e583f2d37 |
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font_01_sfnt_off0000ffaa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFAA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000117c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117C1 | 10596 bytes |
SHA-256: 01e177ae6db7c910c112703569dff50afe9bdbe53a3a3e59dd97ae1cb80127ed |
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