MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains multiple heuristics indicating malicious intent, including ML classification and ClamAV detection as a phishing trojan. It also features a 'download button' lure and numerous links to compromised websites, suggesting an attempt to trick users into downloading malicious content. The embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=words+that+start+with+ch+but+sound+like+k
- http://thenext.pk/userfiles/files/32456569712.pdf
- http://highdeal.linkeo.net/ckfinder/userfiles/files/puzokivalanoselo.pdf
- https://adci.vn/data/upload/file/82862523795.pdf
- http://www.como-grup.ro/fisiere/file/newenapupikazufokuna.pdf
- https://sledovani2.gpshlidac.cz/www/userfiles/files/84203177999.pdf
- http://sarljarry.fr/userfiles/file/1023622678.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16143860f519d6---komaxusuzopilemenava.pdf
- https://nacionalequipamentos.com/ckeditor/uploads/files/64870848781.pdf
- https://vnmmalta.com/userfiles/file/gututufapisofabufavup.pdf
- http://banglenhospital.com/UserFiles/File/tunuwedawerevu.pdf
- http://quangcaovuanh.com/vietkiendo/upload/file/xuzatenave.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614091f86b682---pilom.pdf
- https://frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/22690713226.pdf
- https://commonwealthsportsawards.com/userfiles/file/nedejawuwuvuzitutulozesa.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/mhdmptaumegde89t52u0tjqsa7/padepanitidikudulibi.pdf
- https://permargi.com/files/galeria/files/64693324561.pdf
- http://captainkillmite.com/uploads/files/202109021537415737.pdf
- http://vedepcuaem.com/luutru/files/fasovidobota.pdf
- http://bangladeshceramicsociety.com/uploads/editor/files/42097771885.pdf
- http://refpecsbelvaros.hu/kepek/files/24141286410.pdf
- http://brandorbit.in/userfiles/file/boxopubufewopumorinolaluf.pdf
- https://threadworx.com/thread/admin/uploads/file/dipixibekozod.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_off0000bec0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBEC0 | 16792 bytes |
font_01_sfnt_off0000d6d2.bin3594a40749058d621e3673e2248d2e6a2b9f3b65f032e0bb90c02fb12c630fae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6D2 | 17488 bytes |
font_02_sfnt_off000103c2.binde4be459fd3bf6b22356a363b64c3f413455f09147c849c523894ad8d11e05e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103C2 | 10876 bytes |
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