MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous links pointing to compromised CMS uploads, indicating an attempt to host malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a link farm designed to distribute malware or phish users. The ClamAV detection and ML classifier further confirm its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://aviapartner.biz/js/ckfinder/userfiles/files/kuxow.pdf
- http://murielbellhomes.com/userfiles/files/18195399728.pdf
- http://wonsakai.com/uploads/files/80321269359.pdf
- https://nucamsa.es/userfiles/files/wuvilonetuxoroso.pdf
- https://locoffice.ru/userfiles/file/58824799095.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16143446a170e1---19477935397.pdf
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/b6efb5545eb1ce4fdcb17bc602ed228a/50550241603.pdf
- http://asfalon.com/__files/file/nubumiw.pdf
- http://deurenhanger.nl/userfiles/file/14854281161.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614013135bd31---66650858554.pdf
- http://malabarisproducoes.com/arquivos/files/govatazodasinev.pdf
- http://yameitecl.com/ckfinder/userfiles/files/20210907_215125.pdf
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/e7f73bf3caf66290cc6ea6c41aaed751/11350366488.pdf
- http://optykglowacki.pl/obrazki/files/51689730227.pdf
- https://crc.creativechange.net/ckfinder/userfiles/files/joninalupazotip.pdf
- http://rpsbchamber.org/editorData/file/69905251123.pdf
- https://pmapmc.com/userfiles/image/files/ganogapobunakafiwu.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138f98656a4b---seruzexobijenobez.pdf
- http://floridare.ru/app/webroot/img/uploads/file/521105_kivefutedi.pdf
- https://univerosg.com/ckfinder/userfiles/files/77571995120.pdf
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/876a9ed9def307d86edc165ac291ee7a/rimitotajisenerenifep.pdf
- http://www.prodomasa.com/ckfinder/userfiles/files/bafajur.pdf
- http://artanuji.ge/admin/ckeditor/ckfinder/userfiles/files/69123915419.pdf
- http://eg-connect.com/php_codes/Scott/VieauAssociates/code/userfiles/file/17058372646.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=vpn+android+torrent
- 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_off0000ca59.bin7951dd6f33cff03077e039174bb09dc43d36946062879a1f2c725a4f92a77147 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA59 | 17132 bytes |
font_01_sfnt_off0000f6bd.bin6336303517ef53146da347c1932ca10fd135949633f1559f21ff39427f6860f7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6BD | 10140 bytes |
font_02_sfnt_off00010d7a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D7A | 16792 bytes |
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