MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The sample is a PDF document that contains embedded JavaScript, which is a common technique for delivering malicious payloads. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document attempts to trick the user into installing a fake browser update or extension. The embedded JavaScript likely facilitates this by downloading and executing a second-stage payload from one of the numerous extracted URLs, such as https://smidgel.ru/uplcv?utm_term=flash+mi+box+s.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 8
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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JavaScript action low 1 related finding PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=flash+mi+box+s PDF link annotation
- http://gaishachuukobuhin.com/js/upload/files/sadotexe.pdfIn PDF document text
- http://fsnmmaterials.com/UPFILE/userfiles/files/vivuvikagebasi.pdfIn PDF document text
- http://heatexchangersolution.com/upload_fck/file/2021-9-16/20210916133317870875.pdfIn PDF document text
- http://zhfangyuan.com/uploadfiles/files/xafazutu.pdfIn PDF document text
- http://fteq.ru/files/file/lazasajumisetirigax.pdfIn PDF document text
- https://esperidiaogomes.com/userfiles/files/nagafutidonatosofusu.pdfIn PDF document text
- http://chinastom.ru/userfiles/file/novivomojafetuxezur.pdfIn PDF document text
- http://daiichibus.vn/uploads/news_file/ziziwululovogupefabeko.pdfIn PDF document text
- https://sanruouvang.net/images/uploaded/file/pamezimajutogupiwif.pdfIn PDF document text
- http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/67680124566.pdfIn PDF document text
- http://matraholding.hu/images/userfiles/files/4550720557.pdfIn PDF document text
- http://tamlaproject.com/userData/board/file/23099452630.pdfIn PDF document text
- http://year-c.com/upload_fck/file/2021-9-9/20210909180107390720.pdfIn PDF document text
- https://kermoulin.com/userfiles/file/22721456830.pdfIn PDF document text
- https://service-panev.com/userfiles/23034726611.pdfIn PDF document text
- https://noticky.net/akce/fotky/file/powaxokivogeme.pdfIn PDF document text
- http://quincy.pl/ckfinder/userfiles/files/karaleruserapatinef.pdfIn PDF document text
- http://0048.pl/48files/file/51754941575.pdfIn PDF document text
- http://savalis.ru/userfiles/file/wuzokojurun.pdfIn PDF document text
- http://classicalgardenfountains.com/uplds/file/33874087635.pdfIn PDF document text
- https://sharks-cz.cz/images/file/nudadodi.pdfIn PDF document text
- http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/kezevigigume.pdfIn PDF document text
- http://wcsps.com.tw/ckfinder/userfiles/files/77821333653.pdfIn PDF document text
- https://kamwalibais.com/userfiles/file/kusorasizojurakiwosuj.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_off0000f1b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1B4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000109cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109CB | 10160 bytes |
SHA-256: c864f74c362188194cba2d8c454bb0e47aa938333ab51dc7f93441488157ca98 |
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font_02_sfnt_off0001206a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1206A | 18412 bytes |
SHA-256: e222798c2abed79e6834f8d0c40280c6f797d76cf5deb52704e5bbbcf58227e9 |
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