MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. Heuristics indicate it is part of a link farm pointing to compromised WordPress upload storage, suggesting it redirects users to malicious sites. The ClamAV detection and ML classifier further confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbf26141a6---12466972398.pdf
- https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a997ae0b868---wozebikirup.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/9c7eeafed00951446bc06044d676ad11/84086375890.pdf
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f80aa8ba53---82052513104.pdf
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607563348e8ab---lilefaxowaxobodusivon.pdf
- http://www.rannatennis.ee/data/upfiles/files/lorodi.pdf
- https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/4757bmtg36o7q3pmqeu5d9ogv5/9158452327.pdf
- https://mudraconsultancy.com/uploads/files/gavudawotepakozosigola.pdf
- http://rocb-ap.org/file_media/file_image/file/83654970181.pdf
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bae87210e5---gupajajabalifemojip.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160b64c415f202---74835321343.pdf
- https://sjalikave.hu/pictures/file/86195782180.pdf
- http://midlandhigh65.com/clients/6/68/682e31fde28f8c6bff7ebba57332ef5f/File/jotitezudefavejez.pdf
- https://moraure.net/js/ckfinder/userfiles/files/72682510924.pdf
- http://travelport.pl/userfiles//file/4132641414.pdf
- http://victoryelectricalsupply.com/ckfinder/userfiles/files/22663160934.pdf
- https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609131ab1b769---53910359839.pdf
- https://xn--nmqu14inmf.com/upload/files/soxirezoroseparipon.pdf
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c3ece2ee4---72919458553.pdf
- https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/7uul722qh0bivqt08h2600pqr3/wibukasi.pdf
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/81b47221dacee887152e8902f0bfcf55/74723452581.pdf
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d756b68329---rurod.pdf
- https://sailstudy.in/ckfinder/userfiles/files/wadotijojonoropododuloluf.pdf
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a15d503a450---nimukineze.pdf
- http://amadpich.com/userfiles/file/mepuferitefadoxetafode.pdf
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/35330a4f41b5ee79498fa1ed7c72f934/90598461736.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=managing+classroom+and+learning+pdf
- 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_off0000fea0.bin8067ee659ad7ecb80fdda5e8ea1a0a2d91bc723b867370a3646fb0ec8820862d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEA0 | 17464 bytes |
font_01_sfnt_off00012bca.bin4ff0d11a7e4e8f53d46647bfc95499f95d649d267349b6156ef76f1a64d92032 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BCA | 10856 bytes |
font_02_sfnt_off0001449b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1449B | 16792 bytes |
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