MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external links, many hosted on compromised CMS uploads or disposable domains, suggesting a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious, and the heuristics indicate it functions as a link farm designed to distribute further malicious content or phishing pages. The embedded JavaScript likely facilitates the redirection or exploitation process.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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=pdf+corrompido+como+recuperar PDF link annotation
- http://daotaonhaccong.com/uploads/userfiles/file/50061818697.pdfIn PDF document text
- https://ncsccalgary.com/userfiles/files/72992188725.pdfIn PDF document text
- http://48bulls.com/js/upload/files/jubiwawaxoruk.pdfIn PDF document text
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f08d5d25a2---wubenixedasusoxeg.pdfIn PDF document text
- http://www.musicboxpiano.com/contentfiles/sidifivilugudupo.pdfIn PDF document text
- https://sinaia-vik.com/admin/fckeditor/editor/filemanager/connectors/php/file/19119853241.pdfIn PDF document text
- http://straub-online.ch/userfiles/files/53828726303.pdfIn PDF document text
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16131bd72c66c4---ludine.pdfIn PDF document text
- https://aarushimukhwas.idealviews.com/userfiles/files/vabewigubamilajipepo.pdfIn PDF document text
- http://asupuro.com/user_data/image/file/59718010027.pdfIn PDF document text
- http://sz-nuoyi.com/Upload/file/2021090514490126921.pdfIn PDF document text
- https://www.tyrtaios.gr/ckfinder/userfiles/files/besojota.pdfIn PDF document text
- http://thegioituigiay.net/uploads/files/96726525801.pdfIn PDF document text
- https://brianhigbielaw.com/UserFiles/file/pilovugowesuworug.pdfIn PDF document text
- http://xn--80aikni6a0b.xn--p1ai/images/file/68151495753.pdfIn PDF document text
- http://savitapiti.org/ckfinder/userfiles/files/89884041433.pdfIn PDF document text
- http://www.sospapa24.com/lib/ckfinder/imgupload/files/jutedotezimadetuminomiv.pdfIn PDF document text
- http://longarmacademy.net/fckeditor/userfiles/file/porirupalunaliripufopima.pdfIn PDF document text
- https://kalyna.ua/sites/default/files/userfiles/file/pivololibife.pdfIn PDF document text
- http://metabolitplus.ru/files/file/jijem.pdfIn PDF document text
- http://artemon.nl/userfiles/file/koripuluxexitazorofupak.pdfIn PDF document text
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131cd8f3ff77---nalesalurudadokibanu.pdfIn PDF document text
- https://papiratisk.cz/soubory/ruwunimatagiwima.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_off0000d7df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7DF | 19972 bytes |
SHA-256: c66378b2523636f967188bf1584df465567f6a08e05837494ae241fcb647ba58 |
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font_01_sfnt_off00010abd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ABD | 10468 bytes |
SHA-256: 755ebd359cfd93cc336120288a41a780d9d5f0fcf77ec25d4d24f6c051e10bf4 |
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font_02_sfnt_off00012282.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12282 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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