MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple external URLs, some hosted on compromised WordPress sites. The presence of numerous URLs, including one with a 'utm_term' parameter suggesting tracking, points towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://coretry.ru/uplcv?utm_term=oreo+tv+app+download+new+version
- https://yasacompany.com/upload/files/xakufetejaloto.pdf
- http://feuerwehrobrigheim.de/upload/files/34170158181.pdf
- https://mut-zur-veraenderung-hambuch.de/userfiles/file/fomorimixozadiduv.pdf
- https://vanrun-it.nl/userfiles/files/bumusadalodin.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161330f7eb11d5---fezibitepatowuv.pdf
- http://osoboebludo.com/ckfinder/userfiles/files/60880068927.pdf
- http://paitoonbox.com/userfiles/files/fenewuseje.pdf
- https://firesystem.ro/imagini_ws/43750976963.pdf
- http://tutek.eu/userfiles/file/xazuxejofavatapu.pdf
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/16d3far2fhrnad1k1beln0tha2/42545285976.pdf
- http://capitolmetrophysicaltherapy.com/files/files/xekebobanap.pdf
- http://hrzservices.com/uploadfiles/file/92224656017.pdf
- http://avvocatoandreabruschi.it/userfiles/files/zemojesiwiwu.pdf
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/lc8qnc96g11be304431l3j51g3/77357470235.pdf
- http://hosungtour.com/FileData/ckfinder/files/20210908_B8C630383A502DE6.pdf
- http://geodavidepini.it/userfiles/files/74879072792.pdf
- http://kraemer-duennebacke.de/files/file/74513573794.pdf
- http://ccsilver.kr/files/fckeditor/file/39818875661377be9e1f69.pdf
- http://hftyby.com/upload_fck/file/2021-9-12/20210912192149605942.pdf
- http://kinel-hunter.ru/upfiles/file/57640053790.pdf
- https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/6519635669.pdf
- http://expertsystemgroup.com/file_media/file_image/file/94294368948.pdf
- https://juraganmonyet.com/contents/files/xewopavatuw.pdf
- http://drivescuolaguida.it/userfiles/files/20982504589.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_off0000cc1e.bin161923dbff0acbaa1b2d4160d1960fea97ff088e248eb3db20c172ee930186a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC1E | 10564 bytes |
font_01_sfnt_off0000e468.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE468 | 16792 bytes |
font_02_sfnt_off0000fc7a.bin634f31a803ae74d0b6aedbd4710b6157c9722c49499d811755bd4a5c1eec23d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC7A | 16968 bytes |
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