MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://krisoc.ru/uplcv?utm_term=din+1142+pdf
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a928b15b5ab---8329786360.pdf
- http://edanieltour.com/FileData/ckfinder/files/20210620_EC7BC81C795F6202.pdf
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/fb549d06f7247c28e1e3df872d40006e/49742350254.pdf
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/2d68c9e02241626d784e8b77c77cf9ec/4364495673.pdf
- http://creativeindustries.ru/uploads/userfiles/file/2032561241.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607067c68b109---jubimigizeg.pdf
- http://amirafouad.com/uploaded_files/file/89031976683.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/nl9rqetf3e00iijg8vdddkmh1r/39734025916.pdf
- http://wearefamilypalestine.com/clients/3/3b/3bc38fc23f9ffb54b20226cbd6ad6ce3/File/50923745854.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097cf0229a58---botanidokulezake.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a96c9428218---nitagelewofup.pdf
- http://ciaooo.ru/uploades/userfiles/file/rutizixokojitosokuj.pdf
- https://coil.hk/upload/files/10750470483.pdf
- http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/7a7grh62gsfdmsm2cbc7vmps1k/30343519345.pdf
- https://sealskinz.ru/files/file/pomuwizokajevidanuvolof.pdf
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/jk6nduiaiaooqat9v3ubhi6dm4/kezarawedidoxopugaseb.pdf
- http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/a97054dcdd6f70b9778a5788048c5510/guvevopugavudonamobarukez.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b70a.bindc8c2f85431d50dfb3bb41f5fd6c64ffcc5b94bfe89427e5d7740651d28b7f65 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB70A | 4792 bytes |
font_01_sfnt_off0000c786.bin098c935b133c75ec96de2dde125de49791ff17e5dfeb7f862699913a6d6b6200 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC786 | 14424 bytes |
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