MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document that contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document likely instructs the user to install or connect with a remote support tool, a common tactic for social engineering. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 7
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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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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://queure.ru/uplcv?utm_term=karen+horney+personality+theory+pdf
- http://proart.by/media/file/poluxovewififazu.pdf
- http://sugarfree-gelato.com/upload/file/xixunizikesaginuvaxur.pdf
- http://vattuxaydunghl.com/userfiles/file/bekafajabixed.pdf
- https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/82bc1829e110ff1b644723860dec771a/jadaxenivewibojezakiva.pdf
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b094fa25af---tixikivisusulanol.pdf
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5087a3bc9---23018149418.pdf
- http://aczelzalog.hu/tmp/74482923305.pdf
- https://plasy.com/uploads/file/73833809214.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/o1amh7f8gi7jc464eb5q89alqg/1851807025.pdf
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611a34c7ed7f9---59223860604.pdf
- https://abeess.com/userfiles/file/dapanobotirubemo.pdf
- http://le-bouquet.be/userfiles/files/lobovazijukuv.pdf
- https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/29cf68176bca6252e74aa48d00f04e49/zafuzurama.pdf
- https://nslogisticservice.com/userfiles/files/27493662675.pdf
- http://ccswcd.com/userfiles/file/kerotuwuxuvuzil.pdf
- http://laptopcuhaiphong.vn/upload/files/50636425228.pdf
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160af91aa767b6---78971500548.pdf
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3266c1f18e---8175888200.pdf
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160764100b5d1c---netisaduxo.pdf
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/759d8b04e20e2b86c1658fb010eab704/83416374679.pdf
- http://angelofthewinds.org/ckfinder/userfiles/files/motepiro.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_off0000e112.bin5d7003ca5cb27900bfb7e6a4bd7a9ad53f779d5635278d73d5f3885a1c8e3541 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE112 | 17456 bytes |
font_01_sfnt_off00010e33.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E33 | 16792 bytes |
font_02_sfnt_off0001264a.bin0ac73844c1ab2532958b358a096bc59bdce4a88f7a0b2b15e886d4701a127b76 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1264A | 10700 bytes |
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