MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS upload directories, suggesting an attempt to redirect users to malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bb190775ef2---24190498698.pdf
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/064e6caddfd8db8991d681df80bf7eea/xazawinojonafet.pdf
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160838ef07c08e---xasisasawigu.pdf
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0ef74feab---34212814208.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6b8d72081---75647838970.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160830ef22e735---96607731215.pdf
- http://happyland-nsk.net/ckfinder/userfiles/files/38899723072.pdf
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/3c30ca44d71cf0d46e841992b256fd43/63894430283.pdf
- http://jirehenl.com/userfiles/file/161406477722.pdf
- https://classconnbio.com/img-jacson/files/mepitoxemoboduvibumaleka.pdf
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cafc96d122---rulaf.pdf
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/dfjk0nsernotfjjfqpt0ifhv75/50514575961.pdf
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e428dc5896---ketadaroviruporobujej.pdf
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/aef34e3cd962c1a4f0f8d9b5d0c2fd18/71260672665.pdf
- http://entone.es/wp-content/plugins/super-forms/uploads/php/files/55b644b56c0e00f57081daacdfa2cd75/62919459853.pdf
- https://mimpishio1.com/contents//files/juweridelumuk.pdf
- http://pescepiana.eu/userfiles/files/fukivem.pdf
- http://maxidmum.com/images/upload/fck/file/razurumaresatidutikiwer.pdf
- https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/6s5djren92fqpi5q1g9phi8v6n/72891379442.pdf
- http://monktonlionsclubkidscamp.com/clients/9/99/99b8b5517e5fb663501b7ee5137ebf55/File/61057717436.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16088156e949c4---vagixunivedami.pdf
- https://anmimar.com/royal/userfiles/file/vesuw.pdf
- http://dzbnf.com/upload/file///41236035536.pdf
- http://fiumevivo.it/userfiles/files/fedidotonoz.pdf
- http://hrzservices.com/uploadfiles/file/jonaxavorabipav.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=renewing+your+mind+bible+study+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_off0000f4f8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4F8 | 16792 bytes |
font_01_sfnt_off00010d0a.bin0f97e002558af5fb4ad18a306a64ad159b0af3f00436a326dd0835419a60d6bd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D0A | 17180 bytes |
font_02_sfnt_off000139c9.bin46a467794fa11d2ae2765d05f4ebe2596885130f97807a8a622cdb8003558ec1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x139C9 | 11164 bytes |
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