MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous embedded URLs pointing to compromised or disposable domains. These links are likely intended to lead users to phishing sites or download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://ketchas.ru/uplcv?utm_term=items+that+begin+with+c
- http://uptownchantilly.com/uploads/files/42797412611.pdf
- https://asiquim.com/ckfinder/userfiles/files/katolet.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/161413e96aee83---mirizivar.pdf
- http://umffz21.ru/admin/ckfinder/userfiles/files/7235436412.pdf
- http://wahluenfty.com/userfiles/856109445.pdf
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/cf7ac544121d9aa66ddc484f78c65802/bikiraxe.pdf
- http://lctrading-gmbh.com/ckfinder/userfiles/files/99539623197.pdf
- http://vertex-decor.com/userfiles/file/3457015007.pdf
- http://champagne-marc-chauvet.com/images/files/vugofivoviwarufuvin.pdf
- https://makanbanyak.net/contents/files/zoruzulatedadaxubixik.pdf
- http://riph.pl/userfiles/file/fefajinenixovetexed.pdf
- http://studioprogettoarchitettura.eu/userfiles/files/77570866236.pdf
- http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/lidixopufopoxezadoxege.pdf
- https://needletherapy.eu/upload/file/81962992604.pdf
- https://chongtham68.com/app/webroot/uploads/files/69425031820.pdf
- http://studioriboldi.eu/userfiles/files/mapigeragamerefanedosu.pdf
- https://kohphanganhotelandtour.com/userfiles/file/mawixetuzosixaloro.pdf
- http://autosoftware.company/autoresponders_images/files/20198794899.pdf
- https://accuratesearch.com/userfiles/file/17058637451.pdf
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/5mbun5jmm5373mpjv6654vc2eh/67330916950.pdf
- http://fli.edu.mn/ckfinder/userfiles/files/lukabemoxuzeli.pdf
- http://hanahana.vn/media/ftp/file/ligimukuwumatuxemazegag.pdf
- https://locoffice.ru/userfiles/file/kapadumonebepojo.pdf
- http://ekachaiguitarist.com/ckfinder/userfiles/files/7994407353.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_off0000d71a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD71A | 16792 bytes |
font_01_sfnt_off0000ef31.bin8fc52193bd55fa34ce883881f1c65f5b54dab4f84a5f7ff38812db6b1c64a7c5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF31 | 10588 bytes |
font_02_sfnt_off00010746.binf5aeb8c963e6a57d33ca8cc9ec89d62fcf84985171369171c7d661e5139a9264 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10746 | 17644 bytes |
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