MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to numerous compromised WordPress sites, which in turn host other PDF files. This suggests a multi-stage attack where the initial PDF serves as a lure to download further malicious content. The ML classifier strongly indicated maliciousness, and the structure of the links points towards a coordinated effort to distribute malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
Heuristics 5
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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 http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6bdd52ae6f---xotav.pdf In PDF document text
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3c7b66124---6276407008.pdfIn PDF document text
- https://paklya.su/design/img/upload/file/93030135745.pdfIn PDF document text
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/jh2ju5iamheqcjk0m16nnacc08/gitezadofodolu.pdfIn PDF document text
- http://hndgyl.com/v15/Upload/file/20216111110179446.pdfIn PDF document text
- http://nuocmambason.com/upload/fckimagesfile/291f44bc717ef141df4fa5a767b37e5a.pdfIn PDF document text
- http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a39accde19d---2000074236.pdfIn PDF document text
- http://normel.org/files/upload/file/zoruxibunesulukixenof.pdfIn PDF document text
- https://aljazeerahpetroleum.ae/userfiles/files/livegowovam.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/bc66gostj3vrgn9qra28u18bk1/lubupulatowafimatele.pdfIn PDF document text
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e46026b3768---67479854044.pdfIn PDF document text
- http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df74097e385---sixobat.pdfIn PDF document text
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f85ff18946---47701916410.pdfIn PDF document text
- http://21cedu.com/pds/userfiles/files/sorejorarixowemot.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/bedf55740c19687f8898156b601a1459/muxedetezesapi.pdfIn PDF document text
- http://allasclub.com/campannas/file/nuredaw.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e43a85afb6---wipulofumavala.pdfIn PDF document text
- https://leganordavigliana.it/uploads/file/madawosuwajowe.pdfIn PDF document text
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e8c69ae76---68750612610.pdfIn PDF document text
- http://r2doodles.com/clients/4/4a/4a4ed909dcef54c1e3ec6a0ce1d29f2d/File/91628528945.pdfIn PDF document text
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081b2f28b22c---46621039745.pdfIn PDF document text
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/v152adhgj15pkrvt29eb217va0/70881432246.pdfIn PDF document text
- http://manavpublicschool.org/manav/userfiles/file/tumutobakugupivuwa.pdfIn PDF document text
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/f0ef9e9403fdb2492389e05b17db7bb3/25000544825.pdfIn PDF document text
- https://www.carrentchiengmai.com/files/32178652038.pdfIn PDF document text
- https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/zadiremegodufogawonefi.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=reprimand+meaning+in+malayalamPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cfcc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFCC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e7de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7DE | 17196 bytes |
SHA-256: 297b08c9c3952e965b2cf476e61e78fb70c6f4cc0b5142542be0c811122e4de1 |
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font_02_sfnt_off00011466.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11466 | 10508 bytes |
SHA-256: efe80ea77b23ae3cb6dc641e9c5149b3ecfc23df3fa289aca11dc64f615653d3 |
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