MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document attempts to trick the user into installing a browser extension or update. While no scripts were directly extracted, the presence of numerous URLs, some pointing to compromised CMS uploads and link farms, suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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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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://yangs-ns.com/ckfinder/userfiles/files/20210606075933.pdf
- https://morganmethod.com/ci/userfiles/files/jowulazebazefigimumo.pdf
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/520lgsg4p90el1ke6e0vblp2d0/toriv.pdf
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c305a1047---84263012411.pdf
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e82e83b9a9---79917217271.pdf
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160d8cd33efcde---32429732829.pdf
- https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766f6ce0c55---sevepasow.pdf
- http://ugyvednok.hu/userfiles/file/fuxop.pdf
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/frh06ubicmu0ck8qiptss9r8uu/lobixuremovokotoruperopa.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d423fc8f484---xeleteruweliz.pdf
- http://gorisum.net/fckeditor/upload_file/file/pipatuzanobuvizoxumetuluf.pdf
- https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d4de6265c---61322323299.pdf
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/eprlr1l2se3vic5kfg62drgst5/71918377388.pdf
- http://nwatchonline.net/userfiles/file/8499856314.pdf
- http://aldo-ins.com/userfiles/file/73095695527.pdf
- http://eugensa.lt/app/webroot/uploads/userfiles/files/nuxapifamesekabop.pdf
- https://thietbivesinhanhhuy.com/asset/files/87672286097.pdf
- http://tourister.kr/userfiles/file/kuraliboz.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/brge04k22bhbbckenuj9vuejcb/kunonaw.pdf
- http://predit.ru/admin/ckfinder/userfiles/files/pukulawezemekakuworen.pdf
- https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/7e9f80a80dff572046444ba168011267/16051344804.pdf
- http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/buguwizoxomoveko.pdf
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b0875113e4c---54170435944.pdf
- http://muzeumostrowiec.pl/obrazy/file/93663797266.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=3ds+max+2021.1+download
- 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_off0000fb89.bin36a11a0eaa1a94100c4114612603d50464c51d2c7750e80409ce8fc28e25d6fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB89 | 10612 bytes |
font_01_sfnt_off000113e3.bin04e138eabcaa51f1d5a39646c67e9aa231c4d7fec7d3542a5dbd15aaf3a96a71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113E3 | 17916 bytes |
font_02_sfnt_off000142ad.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142AD | 16792 bytes |
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