MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, pointing to a tactic of using such sites to host malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 http://an-ocn.ru/ckfinder/userfiles/files/90709776206.pdf
- http://progfin.pl/userfiles/file/finopikedibitufupinaw.pdf
- http://jualumnitoronto.com/editor/uploadfiles/98261767972.pdf
- https://pustelnik-budownictwo.pl/ckfinder/userfiles/files/4028473096.pdf
- http://ulsantour.com/FileData/ckfinder/files/20210909_2DD50E6DC67823D4.pdf
- http://standardamulet.com/files/files/dotofoxotuvutifag.pdf
- http://problemconsulting.com/img/download/files/xikegavobeber.pdf
- http://iehyun.com/editorupload/file/dutugimojidakejasegazeju.pdf
- http://tourhong.com/FileData/ckfinder/files/20210907_CF68FE02504CC529.pdf
- http://cesishotel.lv/res/wysiwyg/file/31728864091.pdf
- https://nidi.mk/ckfinder/userfiles/files/bewedapetanodus.pdf
- http://hosteleriayvending.com/ckfinder/userfiles/files/dotajukevoza.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/8418c8584cf1bada347779bf315a6aca/kiwefojofer.pdf
- http://maturitni-ples.eu/UserFiles/File/lukuzuk.pdf
- http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xokenitixunug.pdf
- http://elateridae.com/images/FCKeditor/file/93084396543.pdf
- https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138b871efad8---22845690791.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/r6hrlgmmhev2m233saidnfdbu4/96923059500.pdf
- http://interroadholland.nl/userfiles/file/juwakemawibixuvedit.pdf
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/a3a8070f57ffdc620b428f09c7088670/70676637912.pdf
- http://terwaarde.be/ckfinder/userfiles/files/juribajipo.pdf
- https://daulte.com/ckfinder/userfiles/files/povim.pdf
- https://lemarko.com/userfiles/file/toduveselibabusobo.pdf
- http://youngdongtec.com/userfiles/file/25162318668.pdf
- https://partroyfuneralhome.com/partroy/assets/file/dadijano.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=touch+to+talk+android
- 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_off0000d9c7.bin8da810e264f81652f5333d6c7c3497406218954b528cc5e183bd20ce481db234 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9C7 | 18520 bytes |
font_01_sfnt_off000109b3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109B3 | 16792 bytes |
font_02_sfnt_off000121ca.binef43802a05bcc5d97b72c3d68bb7e0be8fe1a0689ae92fc2b2f8f015bbf58ca1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121CA | 10320 bytes |
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