MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The presence of an embedded JavaScript stream and a large number of external links, many pointing to compromised WordPress sites, strongly indicates a malicious intent. The ML classifier and ClamAV detection further support this, flagging the PDF as malicious and likely a phishing or trojan delivery mechanism. The embedded JavaScript likely facilitates the malicious activity, such as downloading further payloads or redirecting the user to a phishing site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://cli-kh.com/uploads/files/202109170546362812.pdf In PDF document text
- http://helderlive.nl/ckfinder/userfiles/files/zobiseviw.pdfIn PDF document text
- http://www.wcd.com.tw/ezadmin/ckfinder/userfiles/files/sotisikaz.pdfIn PDF document text
- https://adlinefor.com/home/webagen/public_html/korn/data/file/16676201581.pdfIn PDF document text
- http://arkystudio.eu/userfiles/files/xezazogajulodafavonuxafat.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/nopfvvb5c2du9h428gfriomtc0/91696501828.pdfIn PDF document text
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/f5f6d3ed92ef4c3f08204f178eed4580/vemokowedesimarizod.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/a2846abbafc34098e9ec37992d4c6593/fugajofilojirik.pdfIn PDF document text
- http://ilsogno-bomboniere.com/userfiles/files/5150636278.pdfIn PDF document text
- http://carscaso.com/js/upload/files/13615463600.pdfIn PDF document text
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/jvp53fadb5ga60tohekm8ra979/vogitotaxez.pdfIn PDF document text
- http://uspeh-kursk.ru/ckfinder/userfiles/files/kedajepugamorupixojo.pdfIn PDF document text
- http://longarmquiltacademy.com/fckeditor/userfiles/file/37823503442.pdfIn PDF document text
- https://discovercefalu.com/_data/images/file/86369906164.pdfIn PDF document text
- https://ietc-oman.com/userfiles/files/27041802744.pdfIn PDF document text
- https://fallsplat.se/bildbank/file/4399785906.pdfIn PDF document text
- http://imhkayseri.com/resimler/files/duvuguvadepi.pdfIn PDF document text
- https://cissud.eu/uploads/ck_editor/files/kuxajejuxagopixexof.pdfIn PDF document text
- http://swaptoys.org/ckeditor/uploads/files/suxikorajoku.pdfIn PDF document text
- https://prestinireedcorp.com/userfiles/files/60945850401.pdfIn PDF document text
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132945483801---19982591417.pdfIn PDF document text
- http://vp-dmsh.ru/admin/ckfinder/userfiles/files/28241872494.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=best+live+football+appPDF link annotation
- 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_off0000e920.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE920 | 10408 bytes |
SHA-256: 002676725d16adc1a1933fc5f433c496451c72b977a5fd5c15667b51d5cd84bb |
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font_01_sfnt_off000100b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100B3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000118c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118C5 | 17912 bytes |
SHA-256: 9f938298c392b17fc7c521755e6818b3ad05640e38ff6b60deb814c79f019e78 |
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