MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests it functions as a link farm, directing users to numerous disposable hosting sites. The embedded URLs, such as https://chcial.ru/uplcv?utm_term=great+tailed+grackle+call, are likely used to distribute further malicious content or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 5
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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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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://chcial.ru/uplcv?utm_term=great+tailed+grackle+call PDF link annotation
- https://friendsofmultisport.com/ckfinder/userfiles/files/73029880480.pdfIn PDF document text
- http://cybernet-ap.com/UserFiles/File/14761906077.pdfIn PDF document text
- https://greenfuturevietnam.com/Upload/files/bonisunozijatuga.pdfIn PDF document text
- http://seyrimerdin.com/userfiles/file/junivo.pdfIn PDF document text
- https://radiosmile.hu/upload/file/90701523474.pdfIn PDF document text
- https://edex.co/userfiles/files/58897271982.pdfIn PDF document text
- http://yejida.com/userfiles/file/nutemumudiliwugalasur.pdfIn PDF document text
- http://trendstyleimage.com/uploads/ckfinder/userfiles/files/rurudixefafigitufu.pdfIn PDF document text
- http://camelliafb.com/uploads/files/202109092059573095.pdfIn PDF document text
- http://agapetown.net/ckfinder/userfiles/files/gofowoveziforewajuzij.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1617260b1e77ea---40951395236.pdfIn PDF document text
- http://itena.si/uporabnik/file/66120952111.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/zipumalasulezimi.pdfIn PDF document text
- https://lederstuhl-shop.de/ckfinder/userfiles/files/kilujevowemubisu.pdfIn PDF document text
- http://www.jindatunnel.com/up_files/file/ratogosoraka.pdfIn PDF document text
- https://florissantdesign.nl/docs/Image/file/folisigariroxax.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/28457e37f1794b9b6814954409d2668f/xukerafekirekinez.pdfIn PDF document text
- http://kronospan-mofa-hungary.hu/editor_up/3860990364.pdfIn PDF document text
- https://nutricount.cz/UserFiles/File/48186069321.pdfIn PDF document text
- http://hajnysport.cz/FCK_userfiles/file/49168952608.pdfIn PDF document text
- http://jowinbio.com/upload/files/202109100354217957.pdfIn PDF document text
- http://ashioke.com/images/library/File/tufurerutesekusolidu.pdfIn PDF document text
- http://zoekidsworld.com/userfiles/file/45762690688.pdfIn PDF document text
- https://ip-kamera-rendszer.hu/ckfinder/userfiles/files/rimew.pdfIn PDF document text
- http://irodori.kir.jp/files/file/86094054420.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d6db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6DB | 16540 bytes |
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef |
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font_01_sfnt_off0000edfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDFC | 18988 bytes |
SHA-256: db8678d1c8bad53deb004a748f0062f60a5c52b765856ff47259512b65495acc |
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font_02_sfnt_off00011f49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F49 | 10284 bytes |
SHA-256: b9bdeac425710f9a4bb933ba93d339ee1e2064bffb5c3cad601c11dff756caee |
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