MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of embedded URLs, many of which point to potentially compromised websites or disposable hosting. Heuristics indicate this is a link farm, likely used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://szakkepzosiklos.hu/upload/file/zitokutiwe.pdf In PDF document text
- http://france-ex.com/images/blog/file/79866817000.pdfIn PDF document text
- http://lindendirect.com/ckfinder/userfiles/files/lotidumugufi.pdfIn PDF document text
- https://www.cylinder96.ru/admin/ckfinder/userfiles/files/tuwelixuvogadotu.pdfIn PDF document text
- http://onishi-kyosendo.jp/archive/25397545597.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613476b9d6903---12552533743.pdfIn PDF document text
- http://leylasuren.com/images/userfiles/imagefile/24183837977.pdfIn PDF document text
- http://sun-dr.com/uploads/files/202109041958235487.pdfIn PDF document text
- http://shinies.ru/img/lib/file/4709930169.pdfIn PDF document text
- https://singhaniabrothersltd.com/ckeditor/ckfinder/userfiles/files/45439102665.pdfIn PDF document text
- http://drcleancenter.com/uploads/files/202109051100362496.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef74cbc2e9---62403658534.pdfIn PDF document text
- http://jessie.vn/images/ckeditor/files/43469257298.pdfIn PDF document text
- http://navigator-nsk.ru/userfiles/file/galovokugazodinaxid.pdfIn PDF document text
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f93de25130---14506860422.pdfIn PDF document text
- https://liho.cz/UserFiles/File/temusogonuxuduloxav.pdfIn PDF document text
- https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/fbgfr87kic73i2o3sd5okm1sk2/jidew.pdfIn PDF document text
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/b26af317303830671296fd2c46ac4d52/zowodegewutorapuduxiwuw.pdfIn PDF document text
- https://www.scmsgroup.org/ckfinder/userfiles/files/kutul.pdfIn PDF document text
- https://pfollowers.com/ci/userfiles/files/83781086981.pdfIn PDF document text
- https://adasms.fr/userfiles/file/78105153938.pdfIn PDF document text
- https://abhrian.com/userfiles/files/vutakira.pdfIn PDF document text
- https://hotellemaritime.com/hotel/upload/files/gujebuvoda.pdfIn PDF document text
- http://senvietsystem.com/ckeditor/upload/files/89833873941.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=ideal+logic+30kw+combi+boiler+manualPDF 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_off0000b735.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB735 | 11112 bytes |
SHA-256: 77707edc89deb66f504a51748ee003d08edc9a04a911e5fa3a2399881658b959 |
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font_01_sfnt_off0000d0e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0E8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e8fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8FA | 15212 bytes |
SHA-256: 0a5ac38d67621240020ab10f834c945efbd4086bf90480efabf37a5649a341e1 |
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