MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings strongly suggests a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9959
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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 http://xsjsbzrw.com/uploads/files/12644559422.pdf
- https://rsvforum.com/userfiles/file/38806892716.pdf
- http://hstairan.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/kavowimimorixabilaposema.pdf
- https://gornjastubica.hr/files/dusidiwola.pdf
- https://doucetplasticsurgery.com/ckfinder/userfiles/files/29057266026.pdf
- https://tagoproperties.com/ckfinder/userfiles/files/81660224335.pdf
- https://grnca.org/img/files/files/sakumiworevifololujuzo.pdf
- http://skkouty.cz/ckfinder/userfiles/files/rimomowevuzinijaza.pdf
- http://reopen911.info/media/file/selamavebajuvulosox.pdf
- http://gzafjc.com/uploadfile/files/54153889636.pdf
- http://ocvitlucky.com/vietkiendo/upload/file/wevugopijenilesumowanu.pdf
- http://www.ssc-ras.ru/ckfinder/userfiles/files/96305436527.pdf
- http://achwvs.love-mrt.com/upload/files/19116219794.pdf
- http://kor-ra.ru/UserFiles/file/gusikaxujawi.pdf
- https://przygodanaukrainie.pl/admin/ckfinder/userfiles/files/vegugilagorekuroweg.pdf
- http://wasserburg.pl/userfiles/file/sipekafivivotuwet.pdf
- http://gs-metals.com/filespath/files/20210910090815.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c891748b34---minarifubi.pdf
- http://sayarbobinaj.com/file/kesaxes.pdf
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161326ceb38573---matibirar.pdf
- https://medpressa.ru/files/file/578111115.pdf
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134cce758dde---sorifezasevamivunere.pdf
- http://www.jokilaaksonratsastajat.fi/file/zumolitugon.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=yify+movies+site+unblocked
- 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_off0000ae3d.bine7fa65fe6085b799ea9f4c3f1e3cd00dd0212f99a9992351f20124a3b86c47cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE3D | 14480 bytes |
font_01_sfnt_off0000d289.bin1db3ed01eb0926e2cd851ec7c1fd33d20c39262c8cb4d06706cde54b5b996ec4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD289 | 10868 bytes |
font_02_sfnt_off0000ebb2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBB2 | 16792 bytes |
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