MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to various websites. Several of these URLs are hosted on compromised Content Management System (CMS) upload storage, indicating a potential phishing or malware distribution scheme. The document body is heavily obfuscated and does not provide direct user-facing content, but the heuristic firings strongly suggest malicious intent through the aggregation of external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://cructi.ru/uplcv?utm_term=how+to+reduce+mb+of+a+video+in+android
- https://vnsteeldetailing.com/UserFiles/files/tokekagumurasemaniragaki.pdf
- http://membranekeyboard.de/_data/file/sibivuruguzugad.pdf
- http://mosme.org/uploadfile/files/55667576206.pdf
- http://luckdidea.com/ckfinder/images_store/files/gogexeza.pdf
- http://studioingegneramato.com/userfiles/files/81611090162.pdf
- http://www.primariasantana.ro/uploads/file/newokisogozuliz.pdf
- http://aptwash.com/userData/ebizro_board/file/regupivilibifutawer.pdf
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161324c064bbcf---futadanijuno.pdf
- http://slabowidzacy.smprzemysl.pl/ckfinder/userfiles/files/zuxenomofedolunab.pdf
- https://frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/22690713226.pdf
- https://lanna-flyingclub.com/ckfinder/userfiles/files/vuxogawozodafozi.pdf
- https://medosojewellery.com/userfiles/files/wojijesagepogiba.pdf
- http://fiumevivo.it/userfiles/files/52459351905.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/32ac9ef5b0c11c370c7df37fab0a036f/37958876550.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a5cea64a2b---fogewi.pdf
- http://olimpic.hu/ckfinder/userfiles/files/1908685603.pdf
- http://trip-sale.ru/userfiles/file/86959469985.pdf
- https://dpt-mh.com/uploads/news/files/merevox.pdf
- http://commsoft.nu/demo/ktb/wsmbilder/files/10318666522.pdf
- http://satcomlink.com/userData/board/file/bawenebavirolepemepimez.pdf
- http://packagingandfoodmachinary.com/userfiles/file/busenabeliledufitoxugef.pdf
- http://taigesw.com/upload/files/sedex.pdf
- http://asacnfservices.com/ckfinder/userfiles/files/61888747518.pdf
- http://beautybybelief.com/admin/images/file/30876647474.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000edb4.bin12365ea8d39b55268029b4c6c8f4955f7c8a4f9a081a81aa3fadc255b0571f99 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDB4 | 17988 bytes |
font_01_sfnt_off00011d20.bin271097ef77c5508158da6e69a41d2602bae5b6187296e96c1036af24a43ac864 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D20 | 10808 bytes |
font_02_sfnt_off0001360e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1360E | 16792 bytes |
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