MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of embedded URLs, many of which point to compromised WordPress sites and disposable domains. The ML classifier strongly indicated maliciousness, and the heuristic firings suggest this PDF is a link farm designed to redirect users. The primary purpose appears to be SEO manipulation or distributing further malicious content through these numerous links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://oniceh.ru/uplcv?utm_term=multiprogramming+with+fixed+number+of+tasks
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d658d48922---gumekutenaxafesadenidide.pdf
- https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/pvd4bgjoa2l4tm8m32m7f67983/tewupadigipijiziba.pdf
- https://datajournonepal.org/files/12140149569.pdf
- https://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/70810760924.pdf
- http://findmealocalpainter.com/insurazon/admin/userfiles/file/ruwafiwilileduwapaje.pdf
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/98abdf2219139a37d02b3f346f96fbd0/mepij.pdf
- http://xn--k1akb4c.xn--p1ai/userfiles/file/weduletimewoguli.pdf
- https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/160948a9d2c619---22358945538.pdf
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/57062a639cb2e7aba848e405f1782167/zifedutofilalapixepo.pdf
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e686327669---wesemipenulasinazo.pdf
- http://varanini.pl/userfiles/file/mukomavaseruvituwosugeri.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/263d3579f5affffa1f46e2d9ea0398e4/52533037947.pdf
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/g78d61u3v9naer5bv3t0d1ui90/kifope.pdf
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c15434e3e8d---xotojafex.pdf
- http://zavalinka.by/var/upload/file/51690391199.pdf
- http://clair-environnement.eu/catalogue_dynamique/file/40439701346.pdf
- http://hytechplus.com/userfiles/file/wagifovebokowuwadu.pdf
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/66af85d35760dfb1b23e446e2411f2cd/78570012685.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608ad972b8e61---daposodisuzevoj.pdf
- http://teplospectr.ru/images/files/8734514839.pdf
- http://dyglas.com/userData/board/file/zagadusifolonese.pdf
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086ec40c9853---korulefogafikoruve.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_off0000b563.bin008f1ebd181d0aad521c5059503b9004bc82d88b6077097b5dc265103649a7d2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB563 | 11456 bytes |
font_01_sfnt_off0000cfea.bin4b472d46ef4a5dd46ef07fc25311a4eba4b6a89ca9b49b04c36e8ecebb17c8da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFEA | 17104 bytes |
font_02_sfnt_off0000fd00.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD00 | 16792 bytes |
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