MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, with high confidence. It contains embedded JavaScript, a common technique for executing malicious actions within PDFs. The presence of numerous external URIs, many hosted on potentially disposable domains, suggests a link farm or redirection mechanism aimed at leading the user to malicious content. The ML_NYX_PDF_MALICIOUS heuristic and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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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 http://kosmonautika.ee/ckfinder/userfiles/files/pajagidejifu.pdf In PDF document text
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612ffb15169cf---bapaburaxovatonenetunoz.pdfIn PDF document text
- http://immobilieninvestors.com/userfiles/file/wajatamazizitekalexuvoda.pdfIn PDF document text
- http://primebrokeragetx.com/ckfinder/userfiles/files/nivawe.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16169b92d05804---mesosabelosidasesu.pdfIn PDF document text
- http://msmzizkov.cz/data/dokumenty/bixos.pdfIn PDF document text
- https://jackinthegymtpe.com/uploads/files/202109060307099000.pdfIn PDF document text
- https://riondene.ch/img/uploads/file/25471054298.pdfIn PDF document text
- http://tolltisztitas.eu/userfiles/files/35245991428.pdfIn PDF document text
- https://dakhoathienhoa.net/images/files/72142724019.pdfIn PDF document text
- http://gonuldoviz.com/upload/ckfinder/files/59429724007.pdfIn PDF document text
- https://minervatech.work/js/ckfinder/userfiles/files/jepinezuga.pdfIn PDF document text
- http://4998horo.gmmwireless.com/contents/files/77568902169.pdfIn PDF document text
- http://hypotekaprezamestnancov.sk/res/file/sirogigefemuvuf.pdfIn PDF document text
- https://manhalhealing.com/userfiles/file/xesebolalex.pdfIn PDF document text
- https://sayurmateng.com/contents/files/60490378885.pdfIn PDF document text
- http://xn--2-140-swe8h.xn--p1ai/files/11139008842.pdfIn PDF document text
- http://gd-weimi.com/upfolder/e/files/20210916032605.pdfIn PDF document text
- https://www.info-service.com.tw/plugin/ckeditor/ckfinder/userfiles/files/lozivesodamubi.pdfIn PDF document text
- https://www.abandassociates.com/ckfinder/userfiles/files/pugexuribadome.pdfIn PDF document text
- http://makinsushi.com/uploads/files/pozawurezakugut.pdfIn PDF document text
- https://maintogelonline2.org/contents/files/mutoragowadozemuvimes.pdfIn PDF document text
- http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/79698182703.pdfIn PDF document text
- http://nc-israel.ru/upload/files/43789381554.pdfIn PDF document text
- http://nuklearmedizin-amro.de/userfiles/file/ravotijufusunogu.pdfIn PDF document text
- http://feedproxy.google.com/~r/Xvkpad/~3/TSvcnjQ06Jg/uplcv?utm_term=vegetarian+coconut+curryPDF 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_off0000e020.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE020 | 10376 bytes |
SHA-256: cf914192123799675f501f46424b873a3fe06d6246976e8994bf08005bd85dd6 |
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font_01_sfnt_off0000f7c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7C1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010fd3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FD3 | 18792 bytes |
SHA-256: c20e6a48496ff14fcb78560f8ed30016e00ce164d10fe1e61c3edfc89dcdf926 |
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