MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and external URIs, indicative of malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests a social-engineering attack to trick users into installing malware. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded JavaScript likely facilitates the download and execution of a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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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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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AcroForm button with action trigger low PDF_ACROFORM_BUTTONPDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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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://huntic.ru/uplcv?utm_term=omegle+camera+not+working+mac PDF link annotation
- http://sxcec.org/userfiles/file/41447317419.pdfIn PDF document text
- https://ljlconst.com/admin/images/file/23375478172.pdfIn PDF document text
- http://permagnet.com/upload_files/file/210912011930713986gcoo10.pdfIn PDF document text
- http://ihanzao.com/userfiles/file/20210906031502_698848539.pdfIn PDF document text
- https://abhrian.com/userfiles/files/63974756469.pdfIn PDF document text
- http://pitin-akutsu.com/js/upload/files/nigawudipuxoxapodeb.pdfIn PDF document text
- http://acpiindia.com/userfiles/file/difodi.pdfIn PDF document text
- http://straps.by/ckfinder/userfiles/files/49512283887.pdfIn PDF document text
- http://phucuongplus.com/upload/files/tenupatirabinulujifugor.pdfIn PDF document text
- http://jjkxmy.com/upload/files/202109110405413165.pdfIn PDF document text
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/16135f6828d1bb---sekawogudiseku.pdfIn PDF document text
- http://dakov.hu/_user/file/19215997025.pdfIn PDF document text
- http://chinazzjx.com/d/files/65882432888.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/4b824569bc591ebdc208c9321a512158/82477091385.pdfIn PDF document text
- https://eastmanllc.net/ckfinder/userfiles/files/rekinobuxenomejibin.pdfIn PDF document text
- http://chiengthai.com/file_media/file_image/file/balunuloze.pdfIn PDF document text
- http://fibertechnique.com/tmp/file/bilasixexatifi.pdfIn PDF document text
- https://novinfasteners.com/userfiles/file/28568293603.pdfIn PDF document text
- http://avvolodin.ru/upload/file/59810815222.pdfIn PDF document text
- http://alptw.com/images/files/75161703185.pdfIn PDF document text
- https://windscrm.net/files/file/wumirisu.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_off0000e0f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0F4 | 10608 bytes |
SHA-256: d4dece2f51cec44f51cc38fa38e7b95bdc2e574c6e10b45158ad572a3fed0ea4 |
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font_01_sfnt_off0000f941.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF941 | 18108 bytes |
SHA-256: de23fb0dd83e7fff6293b27617dc2ab1d86e39cc2cf93ea33c8accd1a8f5ea59 |
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font_02_sfnt_off00012857.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12857 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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