MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a tactic to host malicious content or redirect users. The presence of external URIs and link farms indicates an attempt to direct the user to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://clear-es.net/yamituki-n/uploads/files/71783894469.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aa93bd8701b---nilida.pdf
- https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/029c8cede10fcd0b7729a75251b3bb8c/91583336703.pdf
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/312ebdca0d5d1562b480f66697b6c0df/baruxomilakeni.pdf
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/r3k2hk1hdt1b45uur58qub5ub7/16824325781.pdf
- https://advik.net/userfiles/file/dekivapozuvur.pdf
- https://artenika.pl/fck/file/98584494693.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0fbce29f8---vibonarolejida.pdf
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/beea223b510f5454bd7f83e28321cb18/jitap.pdf
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840a23b69b5---kanedixufanavibitekeleb.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd42eb559f---bobazoromarewisogolerixa.pdf
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87390992ab---fiwakurapadinilisowo.pdf
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/30a9c9a2d5f7bf283ab677d3e43df1a9/37749537073.pdf
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf99f54d2b---tubajowuma.pdf
- https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/3e6cbc2cb5acaa3537f3d33afa47ad71/kidozakos.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609dad298c96b---gumagexiv.pdf
- http://consade.com/userfiles/file/15672332896.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba110bb01f---wufovabizitulekatetan.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=pdf+1.3+specification
- 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_off0000b521.bincdfac7045eab1f788374b26ccce32d22011d20e791c99af5ee5b62be4ef58241 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB521 | 10756 bytes |
font_01_sfnt_off0000ce12.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE12 | 16792 bytes |
font_02_sfnt_off0000e624.bin6227c6f79282b6738a6e6421dea8e47b7ad1466ec14ea612e6ad84d8a57fbad1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE624 | 15500 bytes |
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