MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript, which is a common technique for exploiting vulnerabilities or redirecting users to malicious sites. The ML classifier strongly indicated maliciousness, and numerous external URIs were extracted, suggesting a link farm designed to distribute further malicious content or phish for information. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the idea that this PDF is part of a campaign to host many links on disposable domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
Heuristics 5
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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://synerhu.ru/uplcv?utm_term=my+phone+font+style+change PDF link annotation
- http://home-plast.ru/foto/files/gagimokukaxafefadora.pdfIn PDF document text
- https://wanna-drive.nl/files/File/47363828669.pdfIn PDF document text
- http://learningkey.org/userfiles/wofijodapepe.pdfIn PDF document text
- http://dblbtech.com/userfiles/file/18810628780.pdfIn PDF document text
- https://bosgo.mn/uploads/files/newotarewil.pdfIn PDF document text
- http://dishandspoonproductions.com/ckfinder/userfiles/files/gotafogusisawa.pdfIn PDF document text
- http://synphabase.ch/upload/file/97787777870.pdfIn PDF document text
- https://colegiumaniucarei.ro/ckfinder/userfiles/files/89993729073.pdfIn PDF document text
- http://rheumatology.institute/upload/content/file/68679822003.pdfIn PDF document text
- https://ptkas.com/kingkong/userfiles/files/32180377586.pdfIn PDF document text
- http://susasoft.com/upload/userfiles/files/7135639344.pdfIn PDF document text
- http://fantasymusic.it/userfiles/files/terewufapipuxow.pdfIn PDF document text
- http://brandweeramsterdamamstellanden.nl/userfiles/file/raxogadapezeg.pdfIn PDF document text
- https://marcvandewiele.com/userfiles/file/46344334303.pdfIn PDF document text
- http://48bulls.com/js/upload/files/18687313309.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132c18c06db0---13284945745.pdfIn PDF document text
- http://aquaclub.hu/userfiles/file/rutozijemaribe.pdfIn PDF document text
- https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/dezowonegesodej.pdfIn PDF document text
- http://esoftland.com/userfiles/file/91203031070.pdfIn PDF document text
- http://klubbelgickychobrov.sk/editor_uploads/files/tokuvoziwadeta.pdfIn PDF document text
- http://avalon-essenzen.at/userfiles/file/55707895546.pdfIn PDF document text
- https://printsolutions.ro/uploads/wysiwyg/files/45702911682.pdfIn PDF document text
- http://meetburgerusa.com/uploads/files/tufugilaxopipijenufisap.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/925d3149733c2e2b4560405d8b1f1c25/jexevebujapis.pdfIn PDF document text
- http://studiogallerani.it/userfiles/files/49592394768.pdfIn PDF document text
- http://alrabbancapital.com/file/files/11893428267.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_off0000de98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE98 | 17580 bytes |
SHA-256: cfaab1bb24607a7a4b42d35eed64d3ec9e343543bb27f3e5b829b3a6c540faeb |
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font_01_sfnt_off00010be6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BE6 | 10676 bytes |
SHA-256: a63f38ee68a11eca5403b3b8aa188b3bb556cc89d29a30fa976ef7913d121b30 |
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font_02_sfnt_off0001246c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1246C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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