MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a spearphishing attachment used to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://bebelino.ru/userfiles/file/8099821696.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161309919d1129---gegemexufefi.pdf
- https://bdaudit.ro/userfiles/file/88482156828.pdf
- http://xn--hazrdner-r4a10d.com/alisveris/yollanan_resimler/file/89678442652.pdf
- http://canshu.dlzj.net/upload/files/20210917184607970415.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b04f68f1cd---34327961805.pdf
- http://desushibar.com/userfiles/file/11803103720.pdf
- https://wroclawmodelshow.pl/ckfinder/userfiles/files/dufinur.pdf
- http://rapet.hu/files/duzovom.pdf
- http://dichvumucin.com/upload/ckupload/files/duwakigofajowezidevono.pdf
- http://aasghsflqsae.handylover.com/upload/files/20481149665.pdf
- https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/26761193080.pdf
- https://108pizza.pl/uploads/userfiles/files/puwojumedazomixas.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614706034b734---26577937841.pdf
- http://bong-dem-long.org/upload/editor/files/20100387988.pdf
- http://healhumanity.foundation/userfiles/file/josukukog.pdf
- http://globalone-mould.com/gbw/fckfiles/20210913074759.pdf
- http://clinical-pain.com/pds/userfiles/files/wopikakoxesepudoxujibu.pdf
- https://www.retake.dk/ckfinder/userfiles/files/49978413742.pdf
- https://jfava.gemwareserp.com/userfiles/file/tasatubalu.pdf
- https://fminterativa.net/cms/plugins/ckfinder/userfiles/files/95014323263.pdf
- http://erh-hu.com/userfiles/file/dufakipilijatumajoro.pdf
- http://narcisse.sk/editor_uploads/files/dejetazibo.pdf
- http://merwepizza.com/upload/file/tadatilixaxipomujeseji.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=game+of+life+empire+instructions+pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e6aa.bind3900b6ae9774bdbd1a5b2546b3240250a7d325a908aaf0ee743d32d05e9fa69 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6AA | 10920 bytes |
font_01_sfnt_off0000ffeb.bin4966e052a3a52e28f5cff0137306f683cd7944570df27f36d4610f49ec845076 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFEB | 18000 bytes |
font_02_sfnt_off00012e85.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E85 | 16792 bytes |
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