MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to other PDFs hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to lead users to malicious content. The document body is unreadable, but the heuristics and URLs strongly indicate a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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 http://tsuiteru66.com/userfiles/file/76951323568.pdf In PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/6lt4f5e77ss46o1ql87kcbt6g7/fenuxijijunon.pdfIn PDF document text
- https://nslogisticservice.com/userfiles/files/55243309292.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160858ee770206---zizomokodomi.pdfIn PDF document text
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4662616a4---nafutubutofi.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/ho8lighrac76a3fdlh8btche36/nomoxigareforexokam.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9f4dee224---53216966470.pdfIn PDF document text
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6a636adf0---42053822902.pdfIn PDF document text
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/6928f1c3a9c0ff29f711071fcb043c24/wilepikezogunil.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/801b702d47199315f4495c426bf138a3/deziwusenerem.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1610d6d5845be2---42305164712.pdfIn PDF document text
- https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/kugadomima.pdfIn PDF document text
- https://medtek.vn/storage/file/70788915972.pdfIn PDF document text
- http://ceskylakros.cz/userfiles/file/paxoje.pdfIn PDF document text
- http://getsolarnj.com/userfiles/file/9531860835.pdfIn PDF document text
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609695a3cc36c---40691307755.pdfIn PDF document text
- http://bitite.lv/media/txt/122/file/14451993999.pdfIn PDF document text
- http://yavuzselimvakfi.org/resimler/site/files/lesewewivufa.pdfIn PDF document text
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607202d04e934---sidalupifalolanojure.pdfIn PDF document text
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/88c65033f7bfb88c4ac2383fa4a685d6/87601171853.pdfIn PDF document text
- http://showpalmedical.com/userfiles/20727858310.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609db9ddd7fd4---25096705474.pdfIn PDF document text
- http://watthaistuttgart.de/userfiles/file/89279207535.pdfIn PDF document text
- https://hijaustabilo.com/contents//files/wenitezefo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=there+is+one+number+less+than+30+that+has+eight+factorsPDF 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_off0000e6c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6C1 | 11280 bytes |
SHA-256: af43eaf8fe0fbcf2decb67f4154e6178af20faa552ca5e23686c81309dd78b22 |
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font_01_sfnt_off00010115.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10115 | 18576 bytes |
SHA-256: 2031f85c134ec02143b3c9cae8af8b03e396a23c9541412bdcea929a93533243 |
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font_02_sfnt_off0001315e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1315E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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