MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded URLs, many of which point to compromised CMS upload directories. The ML classifier strongly indicated maliciousness, and the structure suggests a link farm designed to manipulate search engine results or distribute further payloads. No scripts were extracted, but the presence of numerous external links is a primary indicator of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 5
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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://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/d15ec6a2bbdd375e5d4a7216d6c4219e/88156699157.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdd8c08b25---27177803956.pdf
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/44ebb2aa5a388861db9945cdd958dfcc/padifu.pdf
- http://energo-winstal.pl/userfiles/file/43776649348.pdf
- http://jcpingie.be/public/files/julabubolenipej.pdf
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130bd9cbe5c0---gosabanunekugiwaseditaful.pdf
- http://mnwebdesign.dk/userfiles/file/6215820118.pdf
- https://granitnet.hu/editor_up/zukatoroguvup.pdf
- https://piti.leaddeehub.com/userfiles/files/87168695495.pdf
- http://gomientrung.vn/uploads/image/files/purawul.pdf
- http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/nikefa.pdf
- http://bonfiremadigan.com/uploads/fckeditor/file/tusoz.pdf
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3281a5b9d---25555423141.pdf
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16136dabe2d259---3608595963.pdf
- https://illustrations.noche.fr/images/files/22048608333.pdf
- http://gyermekhaz.hu/Content/site_images/files/45998445192.pdf
- http://progettocecinacuore.it/writable/public/userfiles/file/1843802376.pdf
- http://cw-cut.com/uploads/file/vimamuzasudiwubafalugir.pdf
- http://jca-t.com/fck_image/file/vulebusizememobuzezo.pdf
- http://chinazzjx.com/d/files/76241932788.pdf
- http://www.gamylai.vn/uploads/files/9696732345.pdf
- https://avukatwebsitesi.trakyasoft.com/upload/files/lunij.pdf
- http://goldcoil.com/uploadfiles/files/pusujizidolag.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=best+way+to+spoof+pokemon+go+android
- 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_off0000fedd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEDD | 16792 bytes |
font_01_sfnt_off000116ef.bin1f57b846df299c28f3c2c812bae1ce16f224bf13c303077325fe0ce5b17caacb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116EF | 18344 bytes |
font_02_sfnt_off000146d1.bin3b30dfa07a860079a6e19e1bfdc11287ea6aa995007fc33ad355e0bdbba00d6c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x146D1 | 11140 bytes |
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