MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. Additionally, it features a large number of external URLs, many hosted on compromised CMS upload directories, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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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 https://crewmak.ru/uplcv?utm_term=foreign+music+download PDF link annotation
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161417fc7e86a5---nonanikobozaxurelevemul.pdfIn PDF document text
- https://mimpishio1bet.com/contents/files/zewuwupuvagamizepumo.pdfIn PDF document text
- http://www.tecnobor.com/ckfinder/userfiles/files/70710686170.pdfIn PDF document text
- https://www.restaurant-latableedevercel.com/ckfinder/userfiles/files/66133750541.pdfIn PDF document text
- http://narcisse.sk/editor_uploads/files/rifiwedimesibujone.pdfIn PDF document text
- http://soloparamideco.com/js/new/fckeditor/userfiles/file/74144660104.pdfIn PDF document text
- https://ariaparvaz.com/basefile/ariaparvazcom/files/bowimunik.pdfIn PDF document text
- https://rugerwafers.com/demo/ruger/beta/userfiles/files/jawowulew.pdfIn PDF document text
- https://buffinvestment.com/upload/ckfinder/files/vofoti.pdfIn PDF document text
- https://ghadir-eng.com/userfiles/files/94596566759.pdfIn PDF document text
- http://preiswerte-unterkunft-papenburg.de/mediapool/76872018499.pdfIn PDF document text
- http://savaksangida.com/resimler/files/7055950894.pdfIn PDF document text
- https://apsco.ly/userfiles/files/20036086804.pdfIn PDF document text
- https://get-insurance.in/ckfinder/userfiles/files/25829752150.pdfIn PDF document text
- http://ubytovani-budejovice.cz/picture/vtextu/file/zurigeradozorerasapexilit.pdfIn PDF document text
- http://mnogonomerov.ru/uploads/file/12817189147.pdfIn PDF document text
- http://ekotop.eu/userfiles/file/rowefuki.pdfIn PDF document text
- https://rakowka.pl/userfiles/file/befaxalolutaz.pdfIn PDF document text
- https://www.delaneyllc.com/ckfinder/userfiles/files/30410362399.pdfIn PDF document text
- http://csc-0411.com/userfiles/file/20210916071944_h7cj3y.pdfIn PDF document text
- https://galerieportelouise.be/userfiles/files/39952634878.pdfIn PDF document text
- http://ilkjv.com/Images/Media/files/bejipunuxinak.pdfIn PDF document text
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614300c30df82---4286461982.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9028c831f---7330577664.pdfIn PDF document text
- 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_off0000b271.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB271 | 15360 bytes |
SHA-256: cbd6587ff3729b3fedf32bdd18c711263eb868e31dc11d56d6c8414e1f64fb03 |
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font_01_sfnt_off0000d931.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD931 | 10776 bytes |
SHA-256: a0a6360106d60f1a6d62b5fff28c42eaec745ac6db820a3998ee34a57cbcb42d |
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font_02_sfnt_off0000f1d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1D0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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