MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to other PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags this behavior. While no scripts were explicitly extracted, the nature of the embedded URLs and the overall structure indicate a potential phishing or malicious content distribution vector, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 5
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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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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://chinahanaro.com/userfiles/file///1837463825.pdf In PDF document text
- http://fred-robin.com/ckfinder/userfiles/files/nevefajuta.pdfIn PDF document text
- https://nicklason.se/ckfinder/userfiles/files/faveros.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b503b36389---lotavuzoke.pdfIn PDF document text
- http://www.gpkoaee.ru/ckfinder/userfiles/files/42573489002.pdfIn PDF document text
- https://digireg.dk/upload/77491813867.pdfIn PDF document text
- https://dongphuchuytai.com/upload/files/mejelomonademibivavasa.pdfIn PDF document text
- http://vansuloi.com/uploads/userfiles/file/vetafibexekezibewopip.pdfIn PDF document text
- https://quizai.com/uploads/files/nozijabojakerubago.pdfIn PDF document text
- http://owv-sad.de/userfiles/files/xazoxibufesoguvalazegesu.pdfIn PDF document text
- https://ozsersogutma.com/upload/files/44107868851.pdfIn PDF document text
- http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/wigudewumumuki.pdfIn PDF document text
- https://thefertilizerequipment.com/d/files/wijonovujigadixoj.pdfIn PDF document text
- http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136179d31fab---9454538546.pdfIn PDF document text
- https://www.iieng.org/editor/ckfinder/userfiles/files/28015773439.pdfIn PDF document text
- https://lordoptika.hu/files/files/somazogadubegamitipe.pdfIn PDF document text
- https://ginniglobal.com/uploads/file/loviso.pdfIn PDF document text
- https://himarco.ir/basefile/himarcoir/files/fumapalekinagikoful.pdfIn PDF document text
- https://www.khaosanpools.org/ckfinder/userfiles/files/47393159100.pdfIn PDF document text
- http://kxnjl.com/userfiles/files/xuzesamofafilidivofufa.pdfIn PDF document text
- http://taihegas.com/filespath/files/20210922220349.pdfIn PDF document text
- https://raljob.com/userfiles/file/77422939465.pdfIn PDF document text
- http://form4concrete.ru/pics/cont/file/nopexobaguxuw.pdfIn PDF document text
- https://giaphutelecom.com/tctt/sites/aaa/file/98923569125.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=new+movies+2021+tamilPDF 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_off0000af50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF50 | 14524 bytes |
SHA-256: 8d1cfaf326ccd215b6c78a5e61d2ee0594595c2c875cd262b65be0b76f9bcf69 |
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font_01_sfnt_off0000d3d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3D9 | 10488 bytes |
SHA-256: 91dd6b708908657d544d5cb57cd6486afdd3f161cb3b91b3f0be9ca006f3407d |
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font_02_sfnt_off0000ebeb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBEB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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