MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for malicious PDFs. The PDF also contains numerous external URIs, many of which point to disposable hosting and appear to be part of a link farm. One prominent URI, 'https://smidgel.ru/uplcv?utm_term=sbi+mobile+apps+for+android', suggests a lure related to mobile applications, likely to trick users into clicking through to a malicious site. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://smidgel.ru/uplcv?utm_term=sbi+mobile+apps+for+android PDF link annotation
- http://maremio.ru/admin/ckfinder/userfiles/files/fasijejuveluliveziv.pdfIn PDF document text
- http://www.ddu-hk.cz/ckfinder/userfiles/files/75808936049.pdfIn PDF document text
- http://gaushalango.com/uploaded_files/userfiles/files/fowadakotanirari.pdfIn PDF document text
- http://beamstraffic.ae/amb/userfiles/file/zosupuvuxemamowekekoga.pdfIn PDF document text
- https://elnativocoffee.com/silver/upload/files/19161960329.pdfIn PDF document text
- https://aayams.com/userfiles/file/60099178371.pdfIn PDF document text
- http://thaifilmind.com/UserFiles/file/lesizasa.pdfIn PDF document text
- http://stmrcstvm.com/userfiles/file/redenilijozira.pdfIn PDF document text
- http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/kizukezome.pdfIn PDF document text
- http://aibrpjoaae2.specialty-match.com/upload/files/98575168131.pdfIn PDF document text
- http://burmeseburmilla-allevamento.com/userfiles/files/magivekabotatusugapojujom.pdfIn PDF document text
- http://francescofesta.it/userfiles/files/12524705356.pdfIn PDF document text
- http://watch62.ru/files/files/liruluguxitod.pdfIn PDF document text
- https://minervatech.work/js/ckfinder/userfiles/files/kegamuw.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/161481a6cbc623---98175085192.pdfIn PDF document text
- http://ideal-site.ru/userfiles/file/41940471444.pdfIn PDF document text
- http://arkystudio.eu/userfiles/files/dafumaritamibudejateza.pdfIn PDF document text
- https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/67531620032.pdfIn PDF document text
- http://gestaocipa.com/public_html/Imagens/file/42287000581.pdfIn PDF document text
- http://boekenwinkelindex.nl/images/uploads/50363823152.pdfIn PDF document text
- http://ksiclubcom.ksiclub.org/svnprojects/DHD/Source/images/files/xiwusudowepefumizozug.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e3f7d15b0---netulofif.pdfIn PDF document text
- http://music-summer-courses.eu/upload/files/lusimemasem.pdfIn PDF document text
- https://cliniquemyo.com/userfiles/file/midunabukebajuwasusubo.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_off0000b314.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB314 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cb2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB2B | 10776 bytes |
SHA-256: c5592c41c2550461a70a715cbc1e0dea54e2629048d06a1b9a4dc59528d386c0 |
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font_02_sfnt_off0000e3a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3A1 | 15300 bytes |
SHA-256: f3df5d23a05ecbd545b8bf1f25be90803c70f4eb07ca9147d1f82ed46c3bfd20 |
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