MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious. It exhibits characteristics of a fake CAPTCHA, designed to deceive users into performing an action. The presence of numerous embedded URLs, including one pointing to a link farm on disposable hosting, suggests an attempt to redirect the user to malicious content or phishing sites. While no scripts were directly extracted, the PDF format and the nature of the heuristics suggest potential for embedded JavaScript or exploit execution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://5lovestartw.com/CKEdit/upload/files/jifuwitonovejaze.pdf In PDF document text
- http://giorgimpianti.com/userfiles/file/30003403286.pdfIn PDF document text
- http://klenderbio.com/upload/files/jevifuxenefakemefitok.pdfIn PDF document text
- https://textmakareknutsson.se/upload/image/xagunijusoxesekimapo.pdfIn PDF document text
- http://propertiesforrent.com/userfiles/file///rabalisazupok.pdfIn PDF document text
- http://divodizain.ru/ckfinder/userfiles/files/87001824245.pdfIn PDF document text
- http://emploi.nat.tn/ckeditor/ckfinder/userfiles/files/31027861561.pdfIn PDF document text
- http://studiocinti.eu/userfiles/files/dategeku.pdfIn PDF document text
- https://urologasdainys.lt/userfiles/file/77526489222.pdfIn PDF document text
- https://planningpvedh.nl/ckfinder/userfiles/files/mukopiloruxizukaga.pdfIn PDF document text
- http://vinag7furniture.com/app/webroot/files/editor_upload/files/63438846759.pdfIn PDF document text
- http://stacjaregeneracja.pl/userfiles/file/11789913368.pdfIn PDF document text
- https://noursportevents.com/wheelmarine/userfiles/file/75250231329.pdfIn PDF document text
- http://sibmaxi.ru/userfiles/file/65948302459.pdfIn PDF document text
- http://patanamachine.com/imgUpload/files/772333111.pdfIn PDF document text
- http://canshu.dlzj.net/upload/files/20210911150556630723.pdfIn PDF document text
- http://ghinelliarchitettura.it/userfiles/files/zajajoke.pdfIn PDF document text
- http://innospectrum.eu/hirlevel/file/terajidoliva.pdfIn PDF document text
- https://wangwangcamp.com/uploads/files/202109111101155478.pdfIn PDF document text
- http://pevak.info/UserFiles/File/4087944004.pdfIn PDF document text
- https://needlugs.com/userfiles/files/15833344360.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613affa36921d---16917406380.pdfIn PDF document text
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/65d75431e57847572501be0ba22f7132/37542266324.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+setup+your+voicemail+on+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_off0000db44.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB44 | 17884 bytes |
SHA-256: 36694659cec692224d713f71ca72cd4412d6e9816c15fc164ac32ee3e0c15bbb |
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font_01_sfnt_off0001090a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1090A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012121.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12121 | 11032 bytes |
SHA-256: 619c85bb88a1241fed61393fac88963b5b6f2699a4e21fcb592a14b8c6fe8de9 |
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