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 URIs, including one identified as a link farm on disposable hosting. Heuristics indicate a browser extension/update installation lure, a common social-engineering tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content or providing credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://pistant.ru/uplcv?utm_term=data+transfer+android PDF link annotation
- http://aliceinformaticasrl.com/user/pages/56076085805.pdfIn PDF document text
- https://dienhoanghean.com/upload/ck/files/16202951279.pdfIn PDF document text
- http://tuanlongland.com/upload/files/wimupebokonu.pdfIn PDF document text
- http://autoscuolapezzano.it/userfiles/files/tamodisubafisugijexedibud.pdfIn PDF document text
- http://inimtrento.it/userfiles/files/17770783885.pdfIn PDF document text
- http://maquinandoysubastando.com/dleyes/admin/fotos/file/14195327888.pdfIn PDF document text
- https://drrajanmahtani.com/userfiles/files/28953830193.pdfIn PDF document text
- http://residencecarlofelice.com/userfiles/files/9849277152.pdfIn PDF document text
- http://noithatdangcap.vn/app/webroot/uploads/files/nibasi.pdfIn PDF document text
- http://thenext.pk/userfiles/files/pozipunetunopivem.pdfIn PDF document text
- https://www.oalysa.cz/ckfinder/userfiles/files/tawofet.pdfIn PDF document text
- http://pilot-market.ru/new/files/file/wewonedoxinojuwuges.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/5545429921.pdfIn PDF document text
- https://baobiachau.com/luutru/files/2146348957.pdfIn PDF document text
- https://hfbee.tw/upload/ckfinder_temp/files/20210914105602.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144ed47b554d---59332083598.pdfIn PDF document text
- https://propactionvehiclesuk.tv/userfiles/files/60849407979.pdfIn PDF document text
- https://amzentransportationindustries.com/admin/imagetemp1/file/92947235824.pdfIn PDF document text
- http://fsoa.cn/userfiles/file/57964994910.pdfIn PDF document text
- http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/rogekekokugodelo.pdfIn PDF document text
- https://huaienclinic.com/uploadpic/files/xugenenoz.pdfIn PDF document text
- http://arci-mp.fr/admin/File/kevebonaleragonokipaz.pdfIn PDF document text
- http://caogenzhiben.com/filespath/files/20210916171819.pdfIn PDF document text
- http://divorce-difficile.fr/userfiles/file/62554187394.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_off0000dd94.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD94 | 10300 bytes |
SHA-256: 5f118480b4ac3b1d78f8b2c6a2e14284b9d49649ce86fbcfb3621bfb51700bb7 |
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font_01_sfnt_off0000f4ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4EA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010cfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CFC | 17940 bytes |
SHA-256: 2ee7a0c9a2f2fb9c697fac9274acd83ee72ee96bf8341f622bb23c6e95fb853b |
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