MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. The PDF also features a large number of external URLs, many of which are hosted on potentially disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 7
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://goldfieldssanddrags.com.au/ckfinder/userfiles/files/didumimofezaxivikaduloku.pdf In PDF document text
- http://yksskj.com/ckfinder/userfiles/files/97994108449.pdfIn PDF document text
- http://koyomisushi.com/uploads/files/72492977906.pdfIn PDF document text
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132a0186ca62---12460377544.pdfIn PDF document text
- https://fnb-concepts.com/images/uploads/files/fares.pdfIn PDF document text
- https://luatsuavina.com/userfiles/file/nanejofope.pdfIn PDF document text
- http://larben.cz/media/images/upload/file/dagosoves.pdfIn PDF document text
- http://aylincinarli.com/fckfiles/file/didosimizarenifofiniwo.pdfIn PDF document text
- http://robfredo.com/userfiles/file/sezanuwezox.pdfIn PDF document text
- http://drzwiukryte.pl/userfiles/file/xapofup.pdfIn PDF document text
- https://repetitorebi.ge/userfiles/files/65006603442.pdfIn PDF document text
- http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/jobesirokozinerijigena.pdfIn PDF document text
- https://orig-shop-gsm.ro/ckfinder/userfiles/files/weginimevobal.pdfIn PDF document text
- http://esistore.de/userfiles/file/96678497486.pdfIn PDF document text
- http://autostyle-japan.com/js/upload/files/75168175271.pdfIn PDF document text
- http://idevicesplus.nl/app/webroot/files/userfiles/files/guvumawasuxezejubabosu.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/lubuvepus.pdfIn PDF document text
- http://daiichibus.vn/uploads/news_file/86831065928.pdfIn PDF document text
- http://15441707.com/data/board/file/20210905055052.pdfIn PDF document text
- http://urbanposthotel.com/admin/ckfinder/userfiles/files/dolomunatuwowipagep.pdfIn PDF document text
- http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/64997982181.pdfIn PDF document text
- http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/zujuxixaj.pdfIn PDF document text
- https://apra.pl/files/file/8924802145.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1613897970ea72---joxogiranudirozisix.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=who+viewed+my+instagram+profile+iphonePDF 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_off0000d68e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD68E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eea5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEA5 | 11204 bytes |
SHA-256: ad63c6de5e4c36fb8f74b3390f7ae34f0befb0ad572c3afea05bae0429e93cb8 |
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font_02_sfnt_off0001088b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1088B | 17944 bytes |
SHA-256: eae1b2796e1ae1c5a405cbce5ef7b6033373faa447f5cf61902b68f6eaa00914 |
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