MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and appears to be non-readable content generated by wkhtmltopdf, further supporting the idea that the primary function is to host malicious links rather than present readable content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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://pistant.ru/uplcv?utm_term=strictly+come+dancing+oti+mabuse
- https://n-v-v.dk/userfiles/file/vitomegefewilekasa.pdf
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16140a4b186fcf---tusunas.pdf
- http://maidichike.com/upload/files/35427671577.pdf
- http://maximaviajes.com/FCKfiles/file/80419515909.pdf
- http://enotecagaribaldi.it/userfiles/files/sefumawelepu.pdf
- http://www.andreapondika.cz/file/burikuruxedizi.pdf
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614ced6c4e94b---49551217729.pdf
- https://searchlink.org/userfiles/file/loboxenajobanibol.pdf
- http://huemin.com/fckeditor/userfiles/file/leveb.pdf
- http://phongthuydotho.vn/upload/files/84252670490.pdf
- http://condosworld.com/abisol1/userfiles/files/28257606908.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16156ccb4c7345---mowejovujalaluxu.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/6afdf65abf4766324199417662886b47/serizetulenezebipego.pdf
- http://vitalbafitnessclub.eu/userfiles/files/57847762988.pdf
- http://186086.com/upload/files/fapegusaxedemubadupu.pdf
- http://vinczeandlaszlo.com/upload/95703722971.pdf
- http://anm-av.de/uploads/files/vimukafinenewegomis.pdf
- http://www.urbanwaterways.info/files/degoxatujelujetuno.pdf
- https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/rf2pt9m92aju4ij6i59569ug66/giguxegexok.pdf
- http://biblioteka-belzec.pl/upload/files/55132578064.pdf
- http://gemmacapitalgroup.com/foto/file/jogawojofamadapofejarab.pdf
- http://maraulsan.com/ckfinder/userfiles/files/43038728341.pdf
- http://szkolka-wiercioch.pl/files/file/xemimusuj.pdf
- http://studiolegalebisantis.it/userfiles/files/magezexupolukonopibukopa.pdf
- http://kevinmcallisterlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72247585366.pdf
- http://showplus.ae/userfiles/files/58221122419.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_off0000b4a5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4A5 | 16792 bytes |
font_01_sfnt_off0000ccb7.bin0fe492e654c683fcccdc7a698cde51ec4425a7f9c82e2ac780a4d4bb0658d22a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCB7 | 16368 bytes |
font_02_sfnt_off0000f5cd.bin8b6cc513207b595907bc6c0c4f6d00e963311b65dbaad25a3e9cf033b289c939 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CD | 11140 bytes |
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