MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF containing embedded JavaScript and numerous external links, many of which point to PDF files hosted on disposable domains. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document likely prompts the user to install a fake browser update or extension, a common social engineering tactic. The embedded JavaScript and external URLs suggest the potential for further malicious activity, such as downloading and executing additional payloads.
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://allytemp.ru/uplcv?utm_term=turn+off+dark+mode+instagram PDF link annotation
- http://www.diplomat2014.ru/ckfinder/userfiles/files/mosoxofid.pdfIn PDF document text
- https://niboparis.com/upload/fckeditor/file/1630831772_1.pdfIn PDF document text
- http://thesnowmanicecream.com/ckfinder/userfiles/files/47957106592.pdfIn PDF document text
- https://biocoils.com/img/file/309922280.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/e421e44e2cda26db28a8e39573751c8f/5309964902.pdfIn PDF document text
- http://chuaphucluong.com/uploads/image/files/36214418662.pdfIn PDF document text
- http://pi-consulting.ch/download/nepuzaxuzuj.pdfIn PDF document text
- https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/noxuboxetotafikege.pdfIn PDF document text
- https://www.prieur-equipement.com/ckfinder/userfiles/files/zixup.pdfIn PDF document text
- https://nsaimmigration.com/userfiles/file/bogugivaxijafutixiwubuzi.pdfIn PDF document text
- https://newdesert.pl/userfiles/file/modejuxifuxozewe.pdfIn PDF document text
- http://www.waetsukai.jp/system/ckfinder/userfiles/files/dobixuzanobuvufapasine.pdfIn PDF document text
- http://hyundaiokla.com/uploads/files/49756316610.pdfIn PDF document text
- http://dasbluemchen.com/1887732956.pdfIn PDF document text
- http://auto4-spb.ru/public/images/ckfinder/files/beburoxoviwilukuviwo.pdfIn PDF document text
- http://mascotdd.com/file_media/file_image/file/50029926630.pdfIn PDF document text
- http://abarappresentanze.it/userfiles/files/suziforegoguzumasazog.pdfIn PDF document text
- http://silverspringabw.com/uploads/files/bafezejesupawiwogab.pdfIn PDF document text
- https://stw-nowogard.pl/download/file/migatazotojagab.pdfIn PDF document text
- https://dukeofmarshall.com/ckfinder/userfiles/files/ritorovapux.pdfIn PDF document text
- https://hotelite.in/userfiles/file/42616276115.pdfIn PDF document text
- https://bookmyexcellence.com/bookmyexcellence/js/ckfinder/userfiles/files/karuguso.pdfIn PDF document text
- http://bukharajohnscreek.com/sites/default/files/file/52098994374.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_off0000e3b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3B4 | 10804 bytes |
SHA-256: ad3a3e43bcbb90e66dc94481a500614fc782eca46e8d3cb26c731457cf756601 |
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font_01_sfnt_off0000fc6c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC6C | 18704 bytes |
SHA-256: 5b39833c0c0c66e94dbb891ad74c150049a45c230840207324969468fe0e0ec3 |
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font_02_sfnt_off00012c87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C87 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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