MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple URLs pointing to compromised or disposable hosting, indicating a malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests the document is designed to trick users into installing malicious software by posing as a necessary browser update or plugin. The ClamAV detection further confirms its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 8
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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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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://tygodnikzuzlowy.pl/ckfinder/userfiles/files/72372283005.pdf
- https://taiwan-tiaya.com/upload/tiaya_official/files/84417892751.pdf
- http://asclyziarskyklub.sk/userfiles/file/8867886930.pdf
- http://quimis.net/js/ckfinder/userfiles/files/vukinidobo.pdf
- https://ntpuvoice.com/ckfinder/userfiles/files/wimovaxorejewage.pdf
- https://norservis.cz/files/files/84641046289.pdf
- http://land89.com/ckupload/files/92618156646.pdf
- http://computerdoki.hu/user/file/91428593843.pdf
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/161405af87ddb8---mapowigon.pdf
- http://sacmacbook.net/userfiles/file/87965009619.pdf
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/muxusor.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/8b07d4c5dd1303506be0e76e6eb646ff/12323348520.pdf
- http://cukrarska-vyroba.cz/UserFiles/File/refisipewo.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/cfad65q62bddsj6a9lfil22974/54275710758.pdf
- http://airelimpio.mx/img/editor/file/rudiwu.pdf
- http://red-persimmons.com/upfiles/editor/files/85447757479.pdf
- http://bursaceyizgelinlik.com/images_upload/files/99300541469.pdf
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614251b3d3ab7---61449070989.pdf
- http://arndt-fahrschule.de/userfiles/file/20388822655.pdf
- http://budohurtsa.pl/userfiles/file/93905040945.pdf
- https://mimpishio.com/contents/files/71090247123.pdf
- https://alebusph.centralcms.cloud/galeria/files/62600419140.pdf
- https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/8lfkep0vvqu1fl590i4b1m8nf4/wuladutoxekulebijavusarax.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+find+bluetooth+pictures+on+laptop
- 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_off0000d432.bin084b771379b02504a667eb38d418dcfeb0fd034f53d895c100e222448b2362bf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD432 | 19020 bytes |
font_01_sfnt_off00010595.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10595 | 16792 bytes |
font_02_sfnt_off00011dac.bin3765649ea465e6327f2b60749e82d3944dcfe88022a1fb0072de5daa25c32d90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DAC | 11036 bytes |
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