MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and is identified as a link farm pointing to compromised WordPress sites, indicating a malicious intent to redirect users. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or SEO spam distribution mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b34fa459a8d---nuxizak.pdf
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607689a345a4d---76703780063.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/58a5b7d38f643dab9eb09796556561ec/wokiwunuzudu.pdf
- http://americandeliorder.com/uploads/files/jiragenadelakarigupisu.pdf
- https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160989cbb5af94---xulawosu.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/871edb68bfc714b5bcc93a235370001b/lijizuwijifila.pdf
- http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/16qvcdgukjro0faa4ura4csr53/89920094987.pdf
- http://barrybusiness-crm.com/ressource/devis-photo/files/tenafukemepovokexu.pdf
- http://tz5168.com/uploadfile/image/2021/05/14/file/20210514_121440_180.pdf
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/e8c35ba0ec44ee78db176e756b3582f9/rikuvusevaleg.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a181c20117---14840779240.pdf
- https://eitmedu.in/ckfinder/userfiles/files/mogimajuzumowuba.pdf
- http://m-s-g.ru/userfiles/files/88744813861.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/e2a84d78a29f8b30ad43318f8cee0de6/22903575168.pdf
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/c9c55c001af8e78a83a2d6f3afb60e19/mutetiteneludobeli.pdf
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4d37e79cc---14619579495.pdf
- https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/5bef5dd17e98f41f3b93468804c5c8dc/tasenefubojotutenodafula.pdf
- http://w3-japan.com/js/upload/files/27857194288.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/93mgona1vr6unk4c55pudtglh5/11203259151.pdf
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a46b82cb534---fagebusoviponekosej.pdf
- http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/36145352488.pdf
- http://salkim.com/userfiles/file/voneg.pdf
- https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/73934a5f338fac2e3373f24cf3823991/dalobegenimatezazifejiv.pdf
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd562afb28---wekixefisezekomef.pdf
- https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/05dbmvnnfulhuapvscj6a2dh14/71610968563.pdf
- https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/338b0be5a14712aaa36a652930cfba2c/53728788038.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=introduction+to+electric+circuits+9th+edition+solution+manual+pdf+dorf
- 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_off0000d3ff.binfa60c1d5b3876f417aefcc743122c777be260b30343ce4bdba888943c163e1e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3FF | 11104 bytes |
font_01_sfnt_off0000edb8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDB8 | 16792 bytes |
font_02_sfnt_off000105ca.binc9a8a1857f90c8ec516029fc9f0db5271f0e53b8a82e82c1ac5d1a1ab1d6591b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105CA | 16716 bytes |
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