MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and numerous external URIs, many of which are hosted on compromised or disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document's primary purpose is to act as a link farm, likely directing users to phishing sites or further malware. The embedded JavaScript, while not fully analyzed due to obfuscation, is a common vector for exploiting PDF vulnerabilities or initiating malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.7970
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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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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://coretry.ru/uplcv?utm_term=java+jdk+android+studio PDF link annotation
- https://luyenthitoeic.info/userfiles/file/65282822971.pdfIn PDF document text
- http://kibbkw.com/uploads/files/matibukiva.pdfIn PDF document text
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/61182e234f9b3dbdf6441c205239031d/keroluvuw.pdfIn PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ee04321540---99979693804.pdfIn PDF document text
- http://fitsiluet.cz/data/file/49826064485.pdfIn PDF document text
- https://rt-totaalafbouw.nl/userfiles/file/zupowazamaforavowenozex.pdfIn PDF document text
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/161485c8e2b9de---77504513912.pdfIn PDF document text
- https://groupekheidri.com/ckfinder/userfiles/files/fizirurivopaporuwaxi.pdfIn PDF document text
- http://thesnowmanicecream.com/ckfinder/userfiles/files/nabubukapulutazidubi.pdfIn PDF document text
- https://piataafacerilor.ro/app/webroot/files/userfiles/files/97993618877.pdfIn PDF document text
- https://anakaygame.net/calisma2/files/uploads/woxaradopekarovosodunolim.pdfIn PDF document text
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/dabfb06968dfbf6bf11f1bdf08d01135/48103937103.pdfIn PDF document text
- http://baraanduliaptti.org/userfiles/file/renozamabe.pdfIn PDF document text
- https://penmypoem.com/new/admin/uploadfiles/file/rugojewejutajerulubege.pdfIn PDF document text
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16144111074ef4---44367142765.pdfIn PDF document text
- http://www.stsmcc.org/www/js/ckfinder/userfiles/files/popupuligosufegowegovisad.pdfIn PDF document text
- http://ricarda-allegra.de/userfiles/file/29888757689.pdfIn PDF document text
- http://rudolphi.nu/userfiles/file/nuvigelule.pdfIn PDF document text
- https://webmedcentralplus.com/userfiles/file/zuloputivipaw.pdfIn PDF document text
- https://confeccionesruiz.cl/UserFiles/File/49871442162.pdfIn PDF document text
- https://norservis.info/files/files/47344031545.pdfIn PDF document text
- https://arte-salon.ru/upload_picture/buwirerirapoz.pdfIn 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_off0000dbaf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBAF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f3c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3C1 | 20048 bytes |
SHA-256: 936da416d316921473a9b315a0d59ef8b2dc03f17f841891f9b1430c316b2c94 |
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font_02_sfnt_off00012849.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12849 | 10440 bytes |
SHA-256: 065e00df331c919de3ecff5e553c7d8adb916112216a3c44e9a6933556ffe39e |
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