MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URLs, indicating it is designed to lead the user to malicious content. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests the document's purpose is to trick the user into installing a fake browser update or extension. The embedded JavaScript likely facilitates this by redirecting the user or executing further malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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://chcial.ru/uplcv?utm_term=missed+notifications+android PDF link annotation
- http://polyalpan.hu/_user/file/kemupok.pdfIn PDF document text
- https://muahohangnhat.com/app/webroot/uploads/files/98588908607.pdfIn PDF document text
- http://sostrevalli.it/userfiles/files/48391036865.pdfIn PDF document text
- https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/74885976778.pdfIn PDF document text
- http://zamel2.pl/userfiles/file/8434188261.pdfIn PDF document text
- http://ijdssymposium.eu/upload/36002611190.pdfIn PDF document text
- https://firsatoyun.com/calisma2/files/uploads/gutigofunibaxotopudo.pdfIn PDF document text
- http://irk-yoga.ru/upload/files/mumonapetesozikaw.pdfIn PDF document text
- http://hiace-yoshikawa.com/js/upload/files/mokidevovifudipe.pdfIn PDF document text
- https://xrtradingfeedback.com/cmsimages/file/39698933402.pdfIn PDF document text
- https://manorhair.com/uploads/files/202109040047429234.pdfIn PDF document text
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613187b4237e0---fimojafaxazosuteno.pdfIn PDF document text
- http://aktifmedya.com/dosyalar/files/73353846164.pdfIn PDF document text
- https://minervatech.work/js/ckfinder/userfiles/files/zedafawo.pdfIn PDF document text
- http://gainliving.com/upload/editor/file/dekopeloxuvegavedadi.pdfIn PDF document text
- http://tugrabilgisayar.net/resimler/files/pijidotixerogas.pdfIn PDF document text
- https://history.tlshaa.org.tw/ckfinder/userfiles/files/79038589579.pdfIn PDF document text
- http://www.vnv.nu/admin/library/ckfinder/userfiles/files/sorijad.pdfIn PDF document text
- http://velapower.com/glwh/UploadFile/file/2021092202381273499.pdfIn PDF document text
- http://chatyzvule.cz/uploads/82700967215.pdfIn PDF document text
- https://www.e-oswiata.olesnica.pl/ckfinder/userfiles/files/98293847810.pdfIn PDF document text
- http://metrominicabs.com/survey/userfiles/files/sijugadifotunaxiwezonaw.pdfIn PDF document text
- http://iuoooo.com/filespath/files/20210918171637.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_off0000db7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB7C | 17196 bytes |
SHA-256: a95955c8b5b6de65c497d3b66105d13c444ebdb9669a69d09807baa670564f70 |
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font_01_sfnt_off00010821.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10821 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012038.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12038 | 10416 bytes |
SHA-256: ee7767c01fee5965b884539ab579201d9205f4c43bc7cd0f7a6b0fd53a77718d |
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