MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The sample was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it uses a browser extension installation lure. The document body is unreadable, but the presence of numerous embedded URLs, many pointing to PDF files on potentially disposable domains, suggests a phishing or malware distribution attempt. The primary goal appears to be tricking the user into downloading and executing a malicious file disguised as a necessary update or plugin.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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://schokozentrale.de/idata/gekorizu.pdf In PDF document text
- http://lnyuanzong.com/uploads/files/20210904185208.pdfIn PDF document text
- https://khachsan295doson.vn/namthuan/images/news/files/sosugepibomikejujemobunav.pdfIn PDF document text
- http://websteravelandscaping.com/editorData/file/sesojobefozaxuvosevitovin.pdfIn PDF document text
- https://privatecambodiatour.com/userfiles/file/98800531078.pdfIn PDF document text
- http://catherine-massage.com/ckfinder/userfiles/files/14392580586.pdfIn PDF document text
- http://akinmedikal.com/uploads/file/94663526338.pdfIn PDF document text
- https://hotelharmika.com/assets/userfiles/files/90211768731.pdfIn PDF document text
- http://architettoletiziamasciotta.eu/userfiles/files/duzukinumepuxefifug.pdfIn PDF document text
- https://aradovan.com/userfiles/file/64011278823.pdfIn PDF document text
- https://embassyinvietnam.com/webroot/img/files/wixovevuvozomawetijalefu.pdfIn PDF document text
- https://total-sport.pl/img/upload/files/26467014188.pdfIn PDF document text
- https://mobilaide.com/upload/editor/file/sisiranojofabemuviveken.pdfIn PDF document text
- http://kmjmt.com/news/upload/file/210912173414332712f6zk8x.pdfIn PDF document text
- http://tygodnikzuzlowy.pl/ckfinder/userfiles/files/menov.pdfIn PDF document text
- http://tumwebthailand.com/ckfinder/userfiles/files/80105396126.pdfIn PDF document text
- https://catequesisnavarra.org/guiarte_userfiles/files/xugowujojagu.pdfIn PDF document text
- https://kemxoithanhhang.vn/app/webroot/files/images/pages/files/78659785599.pdfIn PDF document text
- http://opuspointpartners.com/ckfinder/userfiles/files/sebidolowikegukofoniv.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/wuzefipifefobosi.pdfIn PDF document text
- https://avukatwebsitesi.trakyasoft.com/upload/files/badeg.pdfIn PDF document text
- https://gameclub.by/uploads/files/38400414976.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613eca48c82ae---jetajaraxulowodaka.pdfIn PDF document text
- http://eachfun.com/ckfinder/userfiles/site_eachfun_com/files/nitiwotula.pdfIn PDF document text
- http://35ju.21tg.cn/uploadfile/ckeditor/files/vegurixiwetat.pdfIn PDF document text
- http://ediljolli.com/userfiles/files/dujusujejetaredajeni.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=what+is+google+chromePDF 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_off0000dd52.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD52 | 19420 bytes |
SHA-256: 17f77af83fb0681840fdc5e683637908773a1b0498eec22eeb827cee1f8da009 |
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font_01_sfnt_off00010f2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F2C | 10564 bytes |
SHA-256: ea7170e9f7d23c9b89ca66c22d11e762b8929e8473ab7413163122af5e70accb |
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font_02_sfnt_off00012751.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12751 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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