MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded JavaScript and numerous external URIs, including a link farm on disposable hosting, suggests the document is designed to redirect users to malicious sites. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may also be part of a multi-stage attack involving password-protected archives.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://krisoc.ru/uplcv?utm_term=como+aprender+a+usar+un+celular+android PDF link annotation
- http://studiodebiaggi.eu/userfiles/files/xewimujademovawivakajek.pdfIn PDF document text
- https://faktxeber.com/resimler/files/66935317732.pdfIn PDF document text
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/rb4oblvg9h3dk9kjr6kbbqo40p/40053059997.pdfIn PDF document text
- http://elitakhealing.com/ckfinder/userfiles/files/mokotasudemabiniferudisaj.pdfIn PDF document text
- https://braindevelopmentmaps.org/userfiles/files/jufomimikalutez.pdfIn PDF document text
- http://fotosvatba.net/userfiles/file/56321754241.pdfIn PDF document text
- https://purmoradiatoriai.lt/images/files/winabiterinefoxun.pdfIn PDF document text
- http://studiotravenzolo.it/userfiles/files/wejalidexedo.pdfIn PDF document text
- http://dobrejaja.com/Upload/file/4231399313.pdfIn PDF document text
- http://constantcontinuity.com/membership/data/files/futuvekavosero.pdfIn PDF document text
- https://essuances.com/ckfinder/userfiles/files/zufoga.pdfIn PDF document text
- https://lawtutors.co.uk/js/ckfinder/userfiles/files/90171810652.pdfIn PDF document text
- https://graveyards-fuj.ae/userfiles/files/sunodutibadaxezutepud.pdfIn PDF document text
- http://dfwarbitrator.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15253760908.pdfIn PDF document text
- http://locnuocvietmy.com/Images_upload/files/ponoxubu.pdfIn PDF document text
- https://mgc.to/sites/web/upload/files/21978298302.pdfIn PDF document text
- http://henghuitong.com/jingkelun/userfiles/files/20210903040006.pdfIn PDF document text
- http://suriyedostlukdernegi.org/image/files/kubasefiwejesulaxe.pdfIn PDF document text
- http://tuyothuyluc.vn/webroot/img/files/wuwoguxapiruxaxaziniveve.pdfIn PDF document text
- http://kingsfinancialconsulting.com/userfiles/file/18037996719.pdfIn PDF document text
- https://pikhospital.com/ck_uploads/uploads/files/gevepetofivuza.pdfIn PDF document text
- http://merrygoldholidays.com/ckfinder/userfiles/files/semuvozinadojikejel.pdfIn PDF document text
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613edb548e1c1---39621880345.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_off0000e2d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2D7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000faee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAEE | 10708 bytes |
SHA-256: 9705f94f772da470b4bb03c9374ccc160bfd38389e167b0e94d7940a34fbdb8f |
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font_02_sfnt_off0001136a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1136A | 19356 bytes |
SHA-256: affffe4525a763a05e4fb5be3d7b56f81ffaf829da06d3e3e42bd9b4dfd33b4f |
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