MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further malicious content. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF downloader.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=adm+crack+apk
- http://allgeology.ru/ckfinder/userfiles/files/99184757905.pdf
- https://www.newhorizonscrisiscenter.org/ckfinder/userfiles/files/jaxoviza.pdf
- http://baugeraeteverleih.de/benutzerdateien/wuvubed.pdf
- https://transdeliveris.lt/userfiles/file/zixujaseropobi.pdf
- http://munsusa.org/userfiles/file/20210909054818.pdf
- http://hillsdalehorseboarding.com/ckfinder/userfiles/files/relevawelotobife.pdf
- http://ilovestory.com/upload/file/gimugifulimewi.pdf
- http://lblussana.it/images/file/69730159974.pdf
- http://kammed.com/userfiles/file/40365873834.pdf
- http://bongoes62.dk/userfiles/file/64919516821.pdf
- http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/59506946045.pdf
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16140e89b318d3---46897934535.pdf
- https://webbsoil.com/home/webb/public_html/ckfinder/userfiles/files/34331185357.pdf
- https://rpaxis.net/userfiles/file/5207684740.pdf
- http://www.pethouse.es/ckfinder/userfiles/files/88965858669.pdf
- http://jobsandhi.com/uploaded_files/userfiles/files/putidosukup.pdf
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/b6740826243bf07fc34c6950f47486f6/81375010630.pdf
- https://www.prieur-equipement.com/ckfinder/userfiles/files/9511449225.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/161347991050aa---63070007241.pdf
- http://bertoniamministrazione.it/bertoni/public/file/doxorinuvuwaxosopodir.pdf
- http://hyunshin.net/userfiles/file/rimofedetujukotaporux.pdf
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136ba09d7512---butabug.pdf
- http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210903000951.pdf
- http://medica-eg.com/userfiles/file/26949832545.pdf
- http://residencelesaline.it/userfiles/files/81998188911.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_off0000bfd0.bin054a3e19efebaa4b037eecd204ffb514c780296b2da00e0672cac76ccb84a251 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFD0 | 9988 bytes |
font_01_sfnt_off0000d5f0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5F0 | 16792 bytes |
font_02_sfnt_off0000ee02.bincbd9d6eee659e63d819c4441ecadfb11043fc363cc0294f716cf3868b7ca56e9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE02 | 16852 bytes |
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