MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to obscure the ultimate destination. The presence of these links and the PDF structure strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://mwflower.com/upimagesfile///57902433115.pdf
- https://yucekalipmakina.com/tsrm1/img/userfiles/file/33760239390.pdf
- http://abnicum.com/files/file/35395944543.pdf
- https://elger.cz/fckphotos/file/51163843892.pdf
- http://hitecds.com/userfiles/file/11219686594.pdf
- http://geluidsadviesnederland.nl/ckfinder/userfiles/files/lizarisedukovokanujazumef.pdf
- http://longarmacademy.net/fckeditor/userfiles/file/12622941552.pdf
- http://packturf.fr/files/54493043202.pdf
- http://sutinlawkrabi.com/ckfinder/userfiles/files/puwexixasosizedukexoba.pdf
- http://rutka.pl/media/upload/files/1a8ed066fc58a6c0788240836bda745b.pdf
- http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607496390ed58---21690409455.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0cf7e4529a---pizixajoluteduzefejivusis.pdf
- http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608936a4a1da4---72687323.pdf
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85b16b3885---60198201327.pdf
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/01bd8acff62d918e2b835b620006f18a/nogawakimujotepomavodop.pdf
- http://zoo-foto.cz/userfiles/file/51771123474.pdf
- http://droneducational.com/admin/userfiles/file/29109697340.pdf
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/7c81e10b981c731770cb8bd735e1f262/95060604201.pdf
- http://mn-print.ru/ckfinder/userfiles/files/ninutazapejuromiga.pdf
- https://easy2ticket.com/upload/files/denofelonuwura.pdf
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/go3vvj5v76jghuq5qlo9tnjok8/waxotelezugaripuxu.pdf
- http://aircond.md/upload_fck/file/279569189.pdf
- http://gpsputhuppally.com/userfiles/file/gevutusuwepovigu.pdf
- http://haokunchem.cn/upload/files/tudodadagufozidi.pdf
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/9778uk3kisdg9rtmtotjep67cc/mipekevawirazivubanovenaz.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=define+salud+publica+segun+la+oms
- 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_off0000f9a4.bin033320ffac25f753cb13bf1cbb152c175441feba6d6d7277cf4cb36f18b48be9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9A4 | 17868 bytes |
font_01_sfnt_off000126a0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126A0 | 16792 bytes |
font_02_sfnt_off00013eb7.bin1099b47bbf13ff6237e9430e838f41c446d126d1e42c96ff3979f006b651f4a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13EB7 | 11008 bytes |
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