MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as a phishing trojan and ML classifier indicated a high probability of maliciousness. Heuristics indicate the document contains a link farm pointing to compromised WordPress upload storage, likely intended to host malicious content or redirect users to phishing sites. The embedded URLs, such as 'https://archism.ru/uplcv?utm_term=sql+injection+attack+and+defense+pdf', are designed to appear as legitimate resources but lead to potentially harmful destinations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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 https://archism.ru/uplcv?utm_term=sql+injection+attack+and+defense+pdf PDF link annotation
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c64e856f87---73502786989.pdfIn PDF document text
- http://tangiahoang.com/skinkorea/Images_upload/files/83228992671.pdfIn PDF document text
- http://fsanaq.com/upload/file/210808083140984377ioegcapg5zp8.pdfIn PDF document text
- http://ebslang.net/_UploadFile/Images/file/5751991898.pdfIn PDF document text
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/mu0bpibu9s3tggnignit836oku/74611203538.pdfIn PDF document text
- http://yuqiaohome.com/uploads/files/202109011609259066.pdfIn PDF document text
- http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/32804712131.pdfIn PDF document text
- https://sakkestadbil.no/userfiles/file/bufufijukijowugikenibapam.pdfIn PDF document text
- http://ziva-muzika.cz/files/file/17530511939.pdfIn PDF document text
- http://fobas.cz/userfiles/file/nanep.pdfIn PDF document text
- http://project-lovcen.me/userfiles/file/83627421359.pdfIn PDF document text
- http://interwork.sk/userfiles/file/sosopuvusilozobomu.pdfIn PDF document text
- http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/bupisoxumabe.pdfIn PDF document text
- https://mojer.bg/files/24664491120.pdfIn PDF document text
- https://tucarrorentacar.co/ckfinder/userfiles/files/49677511397.pdfIn PDF document text
- http://mrmax.ca/clients/9797/File/bogategoxakaxat.pdfIn PDF document text
- http://gsxr.hu/userfiles/file/jumokajaxoxuma.pdfIn PDF document text
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/ef8e2cc45c725749e1831d41e672b2cb/97885291227.pdfIn PDF document text
- https://dhesient.com/media/58979031274.pdfIn PDF document text
- http://zge-led.com/luodan/images/userfiles/file/48310179938.pdfIn PDF document text
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ea74a0fef---nunapulir.pdfIn 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://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_off000105e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105E0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011df2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DF2 | 19300 bytes |
SHA-256: f20b384220282e0ef6f7ca6528d873f0f541e9d032c53b6ca49170eefc556f4a |
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font_02_sfnt_off0001515a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1515A | 10956 bytes |
SHA-256: a54df0ca1547052a757246ee91c410a5ef44fc553904431df66d5aec313aac13 |
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