MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains embedded JavaScript and numerous external URIs, suggesting it's designed to redirect users to potentially harmful websites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a link farm on disposable hosting, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://i-chat.tw/js/ckfinder/userfiles/files/21186208834.pdf In PDF document text
- https://bbox.ru/images/shared/file/bebipifaroxefi.pdfIn PDF document text
- https://serviceservice.eu/userfiles/file/95318527441.pdfIn PDF document text
- https://egyptsuntours.com/userfiles/files/29063088025.pdfIn PDF document text
- https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130174a2b509---tojapukimup.pdfIn PDF document text
- http://danchrisjewelry.com/userfiles/file/42142388151.pdfIn PDF document text
- http://ducthanggroup.com/webroot/img/files/xoxusirakalivowexeturo.pdfIn PDF document text
- http://autolubitel-irk.ru/userfiles/file/51106879042.pdfIn PDF document text
- http://tipsclubcr.com/campannas/file/6541396894.pdfIn PDF document text
- https://grandhotelushba.com/userfiles/file/44544159734.pdfIn PDF document text
- https://webrekruit.com/php_codes/Scott/VieauAssociates/code/userfiles/file/nogageteza.pdfIn PDF document text
- http://rehahomecare.com/upload/editor/files/63001370695.pdfIn PDF document text
- http://stilistspb.online/public/files/uploads/files/9915314296.pdfIn PDF document text
- https://tourgardan.com/basefile/tourgardancom/files/24961487399.pdfIn PDF document text
- http://bangtutrang.com/upload/files/woxozebevi.pdfIn PDF document text
- https://em.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/mevesijafe.pdfIn PDF document text
- http://eau-msu.ru/ckfinder/userfiles/files/74970149146.pdfIn PDF document text
- http://good163.cn/Uploadfiles/files/janaxe.pdfIn PDF document text
- http://kp-technik.cz/ckfinder/userfiles/files/64168499742.pdfIn PDF document text
- http://globalfeedindustry.com/upload/files/mifebazedupituvu.pdfIn PDF document text
- http://lynxitservices.com/ckfinder/userfiles/files/loluxekolox.pdfIn PDF document text
- https://girisimhaber.com/uploads/file/kewunut.pdfIn PDF document text
- https://beauti-full.ru/uploads/files/89739932685.pdfIn PDF document text
- http://topoint.net/userfiles/fckFile/20210904175814.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=without+net+video+callingPDF 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_off0000b23f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB23F | 14508 bytes |
SHA-256: e347cef1296ea203042b11c341b168f460edb690106ebe51d432ce3b9a6d0b08 |
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font_01_sfnt_off0000d621.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD621 | 10540 bytes |
SHA-256: dfb9d57d9d3102599b7d312a659847101351f14babb755e0659362d9f90c469c |
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font_02_sfnt_off0000ede9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDE9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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