MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also contains numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://oniceh.ru/uplcv?utm_term=how+do+i+rotate+a+pdf+and+save+it+that+way PDF link annotation
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/gtp6fgu1mmcde9b1kou4b7p6si/nigibota.pdfIn PDF document text
- http://wxmx.cn/upload/ckimg/files/202109190555205019.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144cc242e33e---76167347438.pdfIn PDF document text
- http://flynewsletter.com/uploads/file/38019067813.pdfIn PDF document text
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16137570bf0e29---45546032663.pdfIn PDF document text
- http://fixafilm.se/userfiles/file/zezunem.pdfIn PDF document text
- https://floridagreatescape.com/media/file/piwenubavuwa.pdfIn PDF document text
- http://emannsltd.com/userfiles/57222520829.pdfIn PDF document text
- http://cofetariafraguta.ro/UserFiles/file/92182403213.pdfIn PDF document text
- https://newline-eg.com/userfiles/file/80018349041.pdfIn PDF document text
- http://habitat3.eu/userfiles/files/zuredegi.pdfIn PDF document text
- https://pre-www.bridge-academy.com/uploaded/ckeditor/files/xedevewudu.pdfIn PDF document text
- http://kursverwaltung.fit-n-essen.ch/ckfinder/userfiles/files/temikamo.pdfIn PDF document text
- https://btsis.com/upload/ckfinder/files/87215433392.pdfIn PDF document text
- http://honmamon-s.com/img_seminar/userfiles/file/masuze.pdfIn PDF document text
- https://pierreseche.fr/userfiles/file/wasenizojofedinozu.pdfIn PDF document text
- http://avandcie-energy.fr/ckfinder/userfiles/files/lelikojupi.pdfIn PDF document text
- http://www.ernakulamarchdiocese.org/www/js/ckfinder/userfiles/files/57653960878.pdfIn PDF document text
- http://www.icareonline.net.au/ckfinder/icare/files/49112825178.pdfIn PDF document text
- https://njshore.drinkpoint.com/uploads/files/92317981763.pdfIn PDF document text
- http://kup-vino.cz/web/ckfinder/userfiles/files/40304440278.pdfIn PDF document text
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/m20u7j8b0i4ji4mvrnnk7o1oqf/zikirasapava.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_off0000d5da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5DA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000edec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDEC | 18056 bytes |
SHA-256: e0cccbaf3a91468d9d40b858e92df8ccd04e9299dbb6ee98682dca1d3d7ffc01 |
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font_02_sfnt_off00011cfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CFC | 10808 bytes |
SHA-256: 4bc02c68d0666cc612736054b0927dd16965f4189af399dc1c838c1ea92aeb80 |
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