MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it is a link farm designed to lure users into installing browser updates. The document body is heavily obfuscated, but the presence of embedded URLs and the 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggest a social engineering attack. The embedded URLs likely serve as redirects to malicious sites or downloaders for further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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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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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 http://blessingsngo.in/userfiles/files/73868862745.pdf In PDF document text
- http://propertiesforrent.com/userfiles/file///77000822500.pdfIn PDF document text
- https://grdr.org/paidel/ckfinder/userfiles/files/1642063937.pdfIn PDF document text
- http://mintaialuminum.com/d/files/47871028543.pdfIn PDF document text
- http://macierz-grodziec.org/files/file/divukirusekerekawufag.pdfIn PDF document text
- http://softwaretesting.kr/club/data/userfiles/file/20210907014636.pdfIn PDF document text
- http://konferencii.org/web/uploads/assets/file/vugibodadolirimasa.pdfIn PDF document text
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/f9ibv88hf38kja1124ltf79rre/kaliroxuxezowojikekog.pdfIn PDF document text
- https://coevent.ru/upload/files/9097898049.pdfIn PDF document text
- https://www.privathospitaletkollund.com/ckfinder/userfiles/files/13136293896.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/161368d2b4e95a---732624716.pdfIn PDF document text
- http://www.gieskestukadoors.nl/ckfinder/files/files/mumonevokofirexujilanonu.pdfIn PDF document text
- http://biometria.pl/photos_fck/file/11233077612.pdfIn PDF document text
- http://signauction.net/userfiles/file/lagutomokabiluvefako.pdfIn PDF document text
- http://ambulatorioveterinariocamali.com/userfiles/files/zesitubareritegamet.pdfIn PDF document text
- http://suamayin.biz/userfiles/file/jotudogefojalomowidi.pdfIn PDF document text
- https://bednidhitraders.com/userfiles/file/tutemofudomosabitofi.pdfIn PDF document text
- http://depcip.com/app/views/panel/ckfinder/userfiles/files/puvojafatumowuv.pdfIn PDF document text
- https://piauiaqui.com/ckfinder/files/59499889182.pdfIn PDF document text
- http://gonganmi.com/userfiles/file/jademolowurozopufaw.pdfIn PDF document text
- https://vili-al.com/uploads/wysiwyg/files/27369959128.pdfIn PDF document text
- http://decamiones.com/userfiles/file/mitatewofuvosaxudexigub.pdfIn PDF document text
- http://julianina.de/upload/file/futogorafavanikaboboki.pdfIn PDF document text
- http://www.kevimotor-rock.hu/files/files/35521237366.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=phoenix+browser+apk+download+for+androidPDF link annotation
- 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_off0000db88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB88 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f39a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF39A | 17588 bytes |
SHA-256: ef584940aa0300230481e166e1e33613fdea9d087d6babcaa6c87701453a920d |
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font_02_sfnt_off0001211d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1211D | 10916 bytes |
SHA-256: 304f8b8b8c5b887be0b32f233cf5dc23b5e780970be69c97394f943c6f335547 |
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