MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised WordPress upload storage or disposable hosting, suggesting it functions as a link farm or redirection mechanism to phishing or scam sites. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this analysis.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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 https://oniceh.ru/uplcv?utm_term=polynomial+of+degree+n
- https://valubil.com/public/uploads/cms_file/cms_files/67381676556.pdf
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/d2c30622365ce0f324ad9490b42c7ff1/34673381270.pdf
- https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/e599f7d703a47512a7c8dc8c2560bd73/59522112300.pdf
- http://tikatalog.sk/_files/file/xisatusapotaxug.pdf
- http://www.thaiboat.net/image/upload/File/95305060326.pdf
- https://koratspring.com/upload/file/dujagokisodipova.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/26b6147u8a8paga68vnc34llr9/novofut.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d75517c40---99923549981.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/9a5f916278fe43c37d5df2029e9c8f79/67373695006.pdf
- https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/13e5076172e1306c42b9f7aa14230aab/39377401632.pdf
- http://mastrodibaglio.it/userfiles/files/97548893028.pdf
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c319ca6c91---93308057121.pdf
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608840467f067---wivumunozolemekasifefozer.pdf
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606e125d024bc---daviwulakokurekozokirawa.pdf
- https://b2cexpressdemo.com/userfiles/file/92671824825.pdf
- http://happyhanool.com/ckupload/files/gusowasotukeponurosetuw.pdf
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd34924a31c---zemazerejabukuza.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160972c0719a16---72237574609.pdf
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/459ae2cdcdf2d891acd63c19fa4cf59f/wuzitozemagi.pdf
- http://gesundezellen.de/neu/userfiles/file/xujuxigemazulemuvirigo.pdf
- http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16081ad3f527af---76084124395.pdf
- http://benedictinoselrosal.org/ckfinder/userfiles/files/55769738598.pdf
- https://invest.pl/userfiles/file/tolufe.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_off000149fe.binef0a2cdc63b1f252c5a61206aa3922731cbda091952cd9c6cad108e5bea0320c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149FE | 19148 bytes |
font_01_sfnt_off00017c8f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17C8F | 16792 bytes |
font_02_sfnt_off000194a6.bin39ab2d4c6406c6b149aecf63ca0f2ba56f0a963201137248b5f506da64a2fb48 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x194A6 | 10544 bytes |
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