MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution attempt. The heuristics indicate a lure to install browser extensions/updates and a password-protected archive, likely to bypass security controls and trick the user into executing a malicious payload. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
Heuristics 9
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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 http://geologocarmignani.com/userfiles/files/boxesabaludo.pdf
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/e263067098c526db50212adfd506e552/50533624622.pdf
- https://licorne-hotel-restaurant.com/userfiles/file/vijoleroreporajurixara.pdf
- http://chrislahoda.ca/userfiles/file/98776573623.pdf
- http://www.aqsclimited.com/EditorImages/file/sizuvawegam.pdf
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3145f2c439---tuwuvaropoxadenatul.pdf
- https://afayl.com/userfiles/file/78284828241.pdf
- http://hoangle.vn/uploads/userfiles/file/87364708236.pdf
- http://namlongprojects.com/images/uploads/files/vorexofuvu.pdf
- https://ap-qatar.com/userfiles/files/pumajatoxerolisixim.pdf
- http://nipissing-lodge.com/clients/b/be/be32fa5c9d1e5a871f1efa0d35b29fe7/File/55358105707.pdf
- http://agnieszkapawlik.com/userfiles/file/35384169977.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160caddf2605d9---zamalarivi.pdf
- http://irinaburmistrova.ru/files/7710602700.pdf
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/9740cadc24eca0aba4659479110bc03b/64983851775.pdf
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a55de6c020f---69483337514.pdf
- https://masterjobintl.com/ckfinder/userfiles/files/rexoxiwap.pdf
- https://uetty.xyz/js/ckfinder/userfiles/files/lefutelekawotikewutaxiri.pdf
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16102952ac4de6---bevalatiw.pdf
- https://www.luthier-auxerre.fr/ckfinder/userfiles/files/mepisatotipubavunuxave.pdf
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/836da197588df2cf10779e86ba5fded7/13753540720.pdf
- http://mimarkamilozkartal.com/userfiles/files/23754940309.pdf
- http://cnkls.com/userfiles/file/1624713895.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=linksys+wrt54g+v1+manual
- 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_off000138ec.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138EC | 16792 bytes |
font_01_sfnt_off00015103.bin961dafdc34becb3ec75d5eac7d28b208679d8eed07d8847d16bc4cd4a25e86fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15103 | 10880 bytes |
font_02_sfnt_off00016a42.bin4d7289707f620436b4928ea347d88673ebc376081dc91b338f797d2f49094d28 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16A42 | 19668 bytes |
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