MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document flagged as malicious by ClamAV and an ML classifier. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document attempts to trick the user into installing a browser extension or update. While no scripts were directly extracted, the presence of numerous external URLs, some pointing to PDF files on potentially disposable domains, suggests a phishing or malware distribution attempt. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific social engineering tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 https://sunrise-photon.com/upfiles/editor/files/lanujepufisosijepix.pdf In PDF document text
- http://akcompany.vn/uploads/userfiles/file/38732048671.pdfIn PDF document text
- http://taiwan-tsai.com/upload/files/dezokanugaxidiwabuxe.pdfIn PDF document text
- http://www.mecateengenharia.com.br/ckfinder/userfiles/files/gadago.pdfIn PDF document text
- http://rsport.eu/yonexshop/static/file/7065152921.pdfIn PDF document text
- http://circuitoinsulargc.com/documentos/file/48668853773.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/b0a2acc595b3e3df7ed5ef33d31bf758/51316565151.pdfIn PDF document text
- https://amrapalispot.com/userfiles/file/91994399191.pdfIn PDF document text
- http://immodraft.nrw/images/architekten_agentur_images_/file/larafemirazesixeko.pdfIn PDF document text
- https://soudurelauziere.ca/upload/editor/file/fomixikuvelepuge.pdfIn PDF document text
- http://avesta-hmora.boj.se/uploads/userfiles/files/tubidivadimota.pdfIn PDF document text
- http://cs-web-design.de/ablage/userfiles/files/nakagomanegejur.pdfIn PDF document text
- http://milwaukee.center/userfiles/file/9455066325.pdfIn PDF document text
- http://massintech.ru/img/outer/files/wosunedobovonozoxapawomu.pdfIn PDF document text
- http://xlpe.net/Images_upload/files/81273247666.pdfIn PDF document text
- https://ichibaninfotech.com/ckfinder/userfiles/files/58760182562.pdfIn PDF document text
- http://tunapvietnam.thietbiotoviet.com/Images_upload/files/jasatamirepejipojibivogi.pdfIn PDF document text
- http://kingbikeonline.com/images/upload/File/35982439914.pdfIn PDF document text
- http://ingpoggi.eu/userfiles/files/28674689876.pdfIn PDF document text
- http://domuran.pl/files/file/bonodejunem.pdfIn PDF document text
- http://biogenetec.tw/image/files/20210922_195741.pdfIn PDF document text
- https://atputasbaze.lv/images/userfiles/files/5750035197.pdfIn PDF document text
- http://stomerijindex.nl/images/uploads/vuvexamiforuvudixulowij.pdfIn PDF document text
- https://es21sys.com/userfiles/file/46983628532.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=windows+update+windows+8.1PDF 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_off000156d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x156D2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00016ee9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16EE9 | 10744 bytes |
SHA-256: 366757293b4ad8967bbe388ae1ec3c7b61e95fd988055e0b9f3cea9bdf07da48 |
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font_02_sfnt_off000187da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x187DA | 18184 bytes |
SHA-256: 0f56408a3254ed52da4d00e3e89946468eeb5fec4d990809a9bc806f636e221c |
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