MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains embedded JavaScript and a large number of external URLs, many of which appear to be part of a link farm designed to redirect users. The presence of JavaScript indicates an attempt to execute malicious code within the PDF, likely to facilitate further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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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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://oniceh.ru/uplcv?utm_term=prepositions+and+conjunctions+exercises+with+answers+pdf PDF link annotation
- http://sloplast.com/userfiles/files/gedos.pdfIn PDF document text
- http://richmore.kr/uploadfile/fckeditor/file/26786403273.pdfIn PDF document text
- https://kabelkyaobuv.sk/editor_uploads/files/gotakagusokapukaborenid.pdfIn PDF document text
- http://climtech.com/files/files/62260585975.pdfIn PDF document text
- http://bnblspecialities.com/userfiles/files/tepanepal.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/5613318603.pdfIn PDF document text
- http://vonschickenfremont.com/uploads/files/peravuwapigefuwapivisep.pdfIn PDF document text
- http://gok-maciejowice.pl/js/ckfinder/userfiles/files/98232339879.pdfIn PDF document text
- https://qpshouse.com/upload/image/file/20586077342.pdfIn PDF document text
- https://agrando.cz/files/file/73064326458.pdfIn PDF document text
- http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/78586274875.pdfIn PDF document text
- http://0851gay.org/userfiles/202109file/2021090701474070554.pdfIn PDF document text
- http://leeclinic.kr/userData/board/file/81653878056.pdfIn PDF document text
- http://tpfish.com.taipei/archive/upload/files/87484871425.pdfIn PDF document text
- http://aan.kz/ckfinder/userfiles/files/4004654277.pdfIn PDF document text
- https://valuekare.com/ckfinder/userfiles/files/pekafolenuseburuj.pdfIn PDF document text
- https://sensiblemachines.com/ckfinder/core/connector/php/files/kiveguge.pdfIn PDF document text
- https://rajaunited.com/contents/files/89720043665.pdfIn PDF document text
- http://www.rify.us/cms-uploads/files/zisuzok.pdfIn PDF document text
- https://tebra.si/userfiles/file/xusokutipoxulutirexem.pdfIn PDF document text
- http://www.museopizarra.com/ckfinder/userfiles/files/44281645016.pdfIn PDF document text
- http://schubert-hh.de/image/file/9137791927.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ee3a17da6---984743745.pdfIn PDF document text
- http://assytekservizi.com/userfiles/files/womonexevibovefoma.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://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_off0000bf93.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF93 | 11092 bytes |
SHA-256: e91990150603be39ca8cba68f7590d09f380d68a736753ec69dc837fb1a3768a |
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font_01_sfnt_off0000d969.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD969 | 17480 bytes |
SHA-256: 5e4aebff366cdcc53d5038e704092c33bf7f5b168ceee21ef94dae75454b6681 |
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font_02_sfnt_off0001067d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1067D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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