MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. The PDF also contains numerous external URIs, many of which point to potentially malicious or disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of a client vulnerability to execute code or redirect the user to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://contua.org/userfiles/file/rimekumarasigotesafaledab.pdf In PDF document text
- http://rothemtour.com/FileData/ckfinder/files/20210904_77844A33A10A7696.pdfIn PDF document text
- http://kustari.net/userfiles/file/77159792113.pdfIn PDF document text
- http://grandrosso.com/js/upload/files/rufiwuwupesume.pdfIn PDF document text
- https://braindevelopmentmaps.org/userfiles/files/34191807454.pdfIn PDF document text
- https://tranthachcaodanang.com/uploads/image/files/guwinujugugoxufoj.pdfIn PDF document text
- https://wmu24.ru/media/file/78871801601.pdfIn PDF document text
- http://sk4education.com/ckfinder/userfiles/files/630334382.pdfIn PDF document text
- http://zaiger.ru/img/file/8223615091.pdfIn PDF document text
- https://fullprotec.com/ckfinder/userfiles/files/duxutexijuzotasenoborixib.pdfIn PDF document text
- http://gnatowski.pl/attachments/file/xekazukitefebumorejasa.pdfIn PDF document text
- http://poddertradingandindustries.com/userfiles/file/bonamefimadimikezulugas.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161324318b8e8b---xewulumefujemefamup.pdfIn PDF document text
- https://plasy.com/uploads/file/60464966725.pdfIn PDF document text
- http://agriturismolataggiasca.eu/userfiles/files/32766568187.pdfIn PDF document text
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef936c1e0f---16880469870.pdfIn PDF document text
- http://shijijiaming.net/filespath/files/20210901060131.pdfIn PDF document text
- https://www.caissedesecolesdu5eme.fr/backoffice/ckfinder/userfiles/files/buxilivodejuwixipugujega.pdfIn PDF document text
- http://oawebserver.com/piceditor/file/gokaxukemanivu.pdfIn PDF document text
- https://webtechnocrats.com/upload/file/93255122499.pdfIn PDF document text
- http://egitara.com/upfiles/files/25208211658.pdfIn PDF document text
- http://canadianrockies.info/files/file/47415754226.pdfIn PDF document text
- http://fairway.cc/images/blog/file/bebaxosikunavi.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=tv+online+iptv+apkPDF 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_off0000e480.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE480 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fc92.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC92 | 18036 bytes |
SHA-256: 57d4c41245de4bb0c72407131c2b06b30c98cd7578ae112712d435d6ead52453 |
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font_02_sfnt_off00012ae9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AE9 | 10096 bytes |
SHA-256: 9cf9df5db1c44c164e84b38554ae81235496270013e7a64bb4afefe860a894fb |
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