MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicates the document is part of a link farm designed to lure victims to malicious content. Although no scripts were explicitly extracted, the nature of the embedded URLs and the overall detection pattern strongly suggest a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 https://synerhu.ru/uplcv?utm_term=how+to+connect+ps4+controller+to+android+for+remote+play
- http://werder-ritter.de/UserFiles/File/56038944309.pdf
- http://obkladacstvikolar.com/content/gikifipativodo.pdf
- http://resetimpianti.it/reset/public/file/mosexoxubojokigaxasu.pdf
- https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/guwusujakoj.pdf
- https://cli-kh.com/uploads/files/202109100559007785.pdf
- http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1613f2ec4ca870---nexudaga.pdf
- http://antasboru.com/guvennet/resimlerfiles/3316249275.pdf
- https://harshahometutors.com/uniformkontakt/userfiles/image/files/6497859900.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/16143e45011c68---rojogodakuzuli.pdf
- https://hohsingfiber.com/ufiles/files/39373351967.pdf
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/08911d295b4e18d43c37cd133065b0de/siwepixafosiwikube.pdf
- http://messtores.ca/fck_user_files/file/24255424714.pdf
- http://kustari.net/userfiles/file/kepufisizazoxijis.pdf
- http://wx-test.com/upload/ckimg/files/202109070543151065.pdf
- http://www.ks-klinika.ru/ckfinder/userfiles/files/zapogarimezit.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613efa866324b---44666428440.pdf
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614276f861567---zudesetimeziboxarizali.pdf
- http://446888.top/userfiles/file/76778143948.pdf
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/161416719b7ca6---92748824684.pdf
- http://uteambio.com/upload/files/rimigumodimoledakogulu.pdf
- https://fivetc.net/uploads/files/70982465653.pdf
- https://www.hsbofmn.com/ckfinder/userfiles/files/63905864982.pdf
- http://finance-bulldog.cz/UserFiles/File/samirufededezidenej.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_off0000e0f1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0F1 | 16792 bytes |
font_01_sfnt_off0000f903.bin6aa357270f9ae57bc090a921b9a43983cd63f2abd41e167c5f7371ea74039a40 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF903 | 18132 bytes |
font_02_sfnt_off00012813.bin4a9a5c40602a87ce12d416db9b7b3bc3b69e2bbed34d02afef35b1096e83aa29 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12813 | 11052 bytes |
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