MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it's a link farm and a browser installation lure. The document body is heavily obfuscated, but the presence of embedded URLs and the 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggest a social engineering attack. The primary goal appears to be tricking the user into downloading and installing malicious software disguised as a necessary browser update or plugin.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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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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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 http://cocoabuterol.com/upload/files/8748485439.pdf In PDF document text
- http://sm.ac.th/ckfinder/userfiles/files/sefobusoriz.pdfIn PDF document text
- http://celyroknaterase.sk/editor_uploads/system/files/simasawawawuwojuke.pdfIn PDF document text
- https://rmp-familienanzeigen.de/cms/files/78489539509.pdfIn PDF document text
- http://theofficefurniturestore.com/ckfinder/userfiles/files/51787595666.pdfIn PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16144e79e74775---38143415248.pdfIn PDF document text
- http://hak-al.com/resimler/files/zewewa.pdfIn PDF document text
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/161380f4b65fa9---59118710605.pdfIn PDF document text
- https://economiadecomunion.com/ckfinder/userfiles/files/11358725648.pdfIn PDF document text
- http://heyumpnd.com/userfiles/file///refepaw.pdfIn PDF document text
- http://www.de.ruben.pl/ckfinder/userfiles/files/xurademokananukejij.pdfIn PDF document text
- http://derp74.fooden.com/UserFiles/files/43977215583.pdfIn PDF document text
- http://enslev-anlaegsservice.dk/userfiles/file/4206930647.pdfIn PDF document text
- http://autohondl.cz/userfiles/file/70498119555.pdfIn PDF document text
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/d4a296dec91f7f56a10af09f44bd2e0e/xewudefopamoxokolirejam.pdfIn PDF document text
- http://kleinschadenexperte.de/userfiles/file/7114132676.pdfIn PDF document text
- http://kcemsp.org/upload/editor/file/68641207762.pdfIn PDF document text
- https://profesa.net/userFilesfile/folin.pdfIn PDF document text
- http://manenshop.com/upload/files/69918096681.pdfIn PDF document text
- https://bodymason.com/user_uploads/files/lolup.pdfIn PDF document text
- http://graciaindoutama.com/kingkong/userfiles/files/lesaregov.pdfIn PDF document text
- https://kaplaitalia.it/userfiles/files/nezawupiniv.pdfIn PDF document text
- http://elai.kz/upload/2021/09files/210907161844884191svkog.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=idm+apk+old+versionPDF link annotation
- 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_off0000c7ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7EC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e003.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE003 | 10564 bytes |
SHA-256: eeac261329d9e2a4b47a98de95a38a10af0464ff5fd4decf2bde22bf8c23426c |
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font_02_sfnt_off0000f805.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF805 | 17800 bytes |
SHA-256: f1b1aa6aa1410c246e0f36a2cc9db819e9207b61397385e978d1895e10b237ea |
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