MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous embedded URLs, many pointing to PDF files on various domains, suggests a link farm designed to redirect users. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically highlights the use of disposable hosting and UTM parameters, common in phishing or malware distribution campaigns. While no scripts were explicitly extracted, the PDF structure and URL patterns strongly suggest it's part of a phishing or malware delivery chain, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 5
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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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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://karlschool.org/uploads/files/202109030951162245.pdf In PDF document text
- http://hftyby.com/upload_fck/file/2021-9-9/20210909150627912385.pdfIn PDF document text
- http://montesantangelo.it/files/files/40032406417.pdfIn PDF document text
- http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/riwurak.pdfIn PDF document text
- https://oteaexpert.fr/cite_imgs/file/butuxi.pdfIn PDF document text
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/161413aa7afb98---86759005143.pdfIn PDF document text
- http://portaldeaquidauana.com.br/ckfinder/userfiles/files/42116125986.pdfIn PDF document text
- https://afritransport.com/app/webroot/files/file/dikowagebixozav.pdfIn PDF document text
- http://luckysim.com/userfiles/file/timabo.pdfIn PDF document text
- https://dogathermalhotel.com/resimler/files/zumoxugaruzajazivuxat.pdfIn PDF document text
- http://ikra-ekb.ru/files/fckeditor/file/76601637670.pdfIn PDF document text
- http://www.bc-arman.kz/ckfinder/userfiles/files/62916689071.pdfIn PDF document text
- https://chiuman-hk.com/images/file/47391155597.pdfIn PDF document text
- http://theartofdesign.nl/ckfinder/userfiles/files/zuloverulijusokad.pdfIn PDF document text
- http://etkenkalip.com/files/seduxidixefonivoxewukilus.pdfIn PDF document text
- http://brilsports.ro/userfiles/file///pabusagugawoto.pdfIn PDF document text
- http://devison-matras.com/upload/file/rorenesadofevuzitonup.pdfIn PDF document text
- http://aasghsflqsae.handylover.com/upload/files/40360384616.pdfIn PDF document text
- http://www.gpe-el.pro/ckfinder/userfiles/files/vifoze.pdfIn PDF document text
- http://vtdsbinhthuan.vn/public/uploads/userfiles/file/mazazijedisuwirolinadab.pdfIn PDF document text
- http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/46694386229.pdfIn PDF document text
- https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136c13b625ac---23475546789.pdfIn PDF document text
- http://mq-water.net/upload/vofelefabagu.pdfIn PDF document text
- http://marinapogon.pl/upload/file/87095276044.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=tekken+5+game+free+download+for+android+mobile+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_off0000ed85.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED85 | 18048 bytes |
SHA-256: 007175c66d9ec3a329f3030c49146778f43587ec9fe4231f8121a1ef700cbcf4 |
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font_01_sfnt_off00011c34.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C34 | 10988 bytes |
SHA-256: 9410b9abf558a2dd0a5225de3273f6db254138f0244f3c28c983f17814c093e3 |
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font_02_sfnt_off00013551.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13551 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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