MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document employs a social engineering tactic by luring the user to install a browser extension or update, a common method for credential theft or malware delivery. It contains numerous external URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content or downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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 https://krisoc.ru/uplcv?utm_term=software+reporter+tool+uninstall
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072c01d8dd9f---miwetotu.pdf
- http://bajcsidavidfoto.com/_user/file/xesawob.pdf
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aff2e137dc---67839271644.pdf
- http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9b2d35231---32603679452.pdf
- https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/bdee2a3b3970ceb73edbba1348acd057/xojosomixom.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3e0c97300---75111288285.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a6ffea982---38176345554.pdf
- http://adance0112.com/upfile/editor/file/pomozip.pdf
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/c28ad079c3461a21246a33d29d911e3f/vozakezibo.pdf
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/cc1a3a90d229cebf4cfd92f8a6f7d8ea/xukonuxuvedewemare.pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607992969dfe7---lapamisor.pdf
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/5j7n06arnn0dqmv38gvgn5iliu/limitimilovibawibexoted.pdf
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160705c0ad70f8---kexatulelosuna.pdf
- https://micast.de/wp-content/plugins/super-forms/uploads/php/files/bgvk774jt1vime21i7d3ule74r/zaxegolibavalitosiv.pdf
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609401881e488---26283575387.pdf
- https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/d88ce2bc1830619d961506824ab6203c/31859430688.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/t6odpjihpnko2vmpraso5396u8/beguzegutepukex.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc95.bin23da70cd6c8e452b2f54c2ef4377b1d3faad7126c93610d1dbabe8f80b321104 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC95 | 5088 bytes |
font_01_sfnt_off0000ee06.bindcdbc23a4ec22808fbb9e6b9b1f6d4566afc48e25edfbc275ed7c78890a92da9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE06 | 10092 bytes |
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