MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple URLs pointing to compromised WordPress sites, suggesting it's designed to deliver a second-stage payload. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates a lure for phishing, likely disguised as a prescription authorization form to trick users into downloading the malicious file. The ML classifier and ClamAV detection further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.7170
Heuristics 7
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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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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://sunuf.co.za/XSRYdR1H?utm_term=bcbs+federal+prescription+prior+authorization+form PDF link annotation
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/162153192b24b9---78069751601.pdfIn PDF document text
- http://ayurvedabodycure.com/kcfinder/upload/files/satejasexaluzanobi.pdfIn PDF document text
- http://csc0731.com/userfiles/file/20220305031655_eaxudu.pdfIn PDF document text
- http://makesomenoise.hu/upload/file/bovidenefi.pdfIn PDF document text
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1622eccf00ed84---kowibetudotafim.pdfIn PDF document text
- https://fcefrance.com/kcfinder/upload/files/dawuzufowo.pdfIn PDF document text
- https://visualmotion.nl/uploads/file/venomezefazufipo.pdfIn PDF document text
- http://omorits.jp/uploads/files/kerizemojofibepix.pdfIn PDF document text
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1621eb3bb5f01f---mowogazixamolovusapavagex.pdfIn PDF document text
- http://giraf-tour.com/kcfinder/upload/files/43865978311.pdfIn PDF document text
- http://kunmobile.vn/files/uploaded/20220217/file/2046350244.pdfIn PDF document text
- https://anvatsaigon.suzukihungyen.net/data/dulieu/files/lekofogopijagorejabazugu.pdfIn PDF document text
- http://afghansolar.com/userfiles/file/68231060468.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/b1640480fb3c64867b49d14dc29189f4/53310277014.pdfIn PDF document text
- http://www.flexformule.nl/kcfinder/upload/files/4938279322.pdfIn PDF document text
- http://immobilieninvestors.net/userfiles/file/gotumexug.pdfIn PDF document text
- http://ailin.kz/js/kcfinder/upload/files/74039484529.pdfIn PDF document text
- http://kutyakozmetikustanfolyam.hu/kcfinder/upload/files/8250025504.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/59a85b479e14db89220f555cea4caf73/butinodugotunilijexabixav.pdfIn PDF document text
- http://estetycznastomatologia.pl/file/files/lifewuzigawaxipewaze.pdfIn PDF document text
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16232bdc87ed7f---legetekazuzered.pdfIn PDF document text
- http://balone.net/_upload/file///6901487474.pdfIn PDF document text
- http://kdsonline.org/userfiles/file/milugujamaxigome.pdfIn PDF document text
- https://hondaotohaiphong.vn/upload/files/fagijuzijaselivuwe.pdfIn PDF document text
- http://baohanhranghm.com/upload/img/files/58239758326.pdfIn PDF document text
- https://rn62ug59c-to8.com/contents/files/73215911716.pdfIn PDF document text
- http://reicar.dk/userfiles/file/kusidivanokuv.pdfIn PDF document text
- https://www.alitec.es/js/ckfinder/userfiles/files/87574116958.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/6de8dfb5a345a01ec312d2fb5f88d694/wovepumekesopiw.pdfIn PDF document text
- http://quiltingacademy.net/fckeditor/userfiles/file/11110948069.pdfIn PDF document text
- https://medtek.vn/storage/file/90508111753.pdfIn PDF document text
- http://kochi-east-rc.com/admin/kcfinder/upload/files/39331795440.pdfIn PDF document text
- http://www.easemyloan.in/assets/kcfinder/upload/files/gopidumemimifivifa.pdfIn PDF document text
- https://areicon.com/images/file/nupepojuperamebuzitavago.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_off0003ba09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3BA09 | 19244 bytes |
SHA-256: f0c3d04b3db7da967db230357f88924d867fb2530eb5a4bdfdc4a8ae6069d1b6 |
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font_01_sfnt_off0003ec07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3EC07 | 16560 bytes |
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9 |
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font_02_sfnt_off00040327.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x40327 | 11236 bytes |
SHA-256: 6e7d92a78b7604b6d239c7f6793a1e296fd610cd4eb97cf1a5b0641f463e0415 |
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