MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains multiple links to external URLs, many hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of 'utm_term=fs+18+download+hack' in one of the URLs indicates a lure related to software downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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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 https://smidgel.ru/uplcv?utm_term=fs+18+download+hack PDF link annotation
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083889d61f61---31150982817.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ffbab571f---37793184751.pdfIn PDF document text
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e9649451a---62505954380.pdfIn PDF document text
- https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840ff20d17c---7574621232.pdfIn PDF document text
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a676081620a---detimofilijofubafifumipim.pdfIn PDF document text
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/lsg3d87oqf93b1c6l0tof834mk/reganakasabelebop.pdfIn PDF document text
- https://vandolderskb.com/images/usr/68017160250.pdfIn PDF document text
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/c7ufbqigsh4qnscsa712gv7d5q/85622917326.pdfIn PDF document text
- https://stopserv.ru/files/file/zesikosuluritepag.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607155abd7e69---25079895144.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b54065719a8---63264959628.pdfIn PDF document text
- http://bajcsidavidfoto.com/_user/file/fobediduzozonizazete.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/352aa620fd08f03a3a119c602185476a/48628513939.pdfIn PDF document text
- http://ahkjt.com/upfile/file/xevekotazizemisopizoxir.pdfIn PDF document text
- http://massageindex.nl/images/uploads/64725045568.pdfIn PDF document text
- http://webursitet.org/Files/file/25235469863.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ddd9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDD9 | 5288 bytes |
SHA-256: 49c3de4d1ab1a602e08c65194849fcfa0c25dc86c9dfee965b8054e837e42554 |
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font_01_sfnt_off0000eff1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFF1 | 10756 bytes |
SHA-256: d36ed9fd9c86878786c7336e94a46d1d110cc2b0316ffb0726a8117bbda4eaba |
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