MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The sample was flagged by a machine learning classifier and ClamAV as malicious, with high-confidence heuristics indicating a browser extension/update installation lure. The document body is heavily obfuscated, but the presence of numerous external URLs, many pointing to PDF files on potentially disposable domains, suggests a phishing or malware distribution attempt. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics strongly indicate malicious intent, likely involving the exploitation of the PDF viewer or the user's trust to download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://thingstodobahrain.net/ckfinder/userfiles/files/xamuwasuje.pdf In PDF document text
- http://niktid.ru/userfiles/file/50182804990.pdfIn PDF document text
- http://euro-ex.net/images/blog/file/guregopifafokemidab.pdfIn PDF document text
- http://bielle-srl.com/userfiles/files/41180875041.pdfIn PDF document text
- http://leaders-adv.net/userfiles/file/10252248721.pdfIn PDF document text
- http://sromedical.com/file_media/file_image/file/49175797654.pdfIn PDF document text
- http://henanshuangxin.com/d/files/labatelabalij.pdfIn PDF document text
- http://lex.tj/img/file/54104728810.pdfIn PDF document text
- http://j1ent.com/userfiles/file/20210904123052.pdfIn PDF document text
- https://hasekei.jp/userfiles/file/21651893500.pdfIn PDF document text
- http://youngthisyear.com/ckfinder/userfiles/files/71215183721.pdfIn PDF document text
- http://www.offshoreyachts.net/web_upload/editor/files/funoxiwenejam.pdfIn PDF document text
- http://magyaringatlanadatbazis.hu/dev/_user/file/63853464603.pdfIn PDF document text
- https://vmgeducationtrust.org/home/vmgedu/public_html/public/userfiles/file/fitolikesefum.pdfIn PDF document text
- https://steklo-shik.ru/userfiles/file/jomorukubufenizusizipok.pdfIn PDF document text
- https://simplehome.ro/ckfinder/userfiles/files/55557921300.pdfIn PDF document text
- https://xnkvinatimex.com/uploads/files/50486418412.pdfIn PDF document text
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/fef3cf78ca5bd70d1a157d36b7323277/zuwif.pdfIn PDF document text
- http://enjoybowlramenandpoke.com/uploads/files/88020763030.pdfIn PDF document text
- https://simon-daulte.com/ckfinder/userfiles/files/romuregomosevozofokeje.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/161329d4574d18---23409839745.pdfIn PDF document text
- https://homestayhoian.thamtuddt.com/uploads/image/files/zawajavilinobebilujebaj.pdfIn PDF document text
- http://dlastudenta.org/Upload/file/86943717798.pdfIn PDF document text
- http://redeyeldn.com/userfiles/file/61117376327.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=alarm+wala+appPDF 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_off0000dd86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD86 | 18112 bytes |
SHA-256: 3e4de8a9cba9c3379e9abbbf74cbf2e493d9c5dc763e935511afbdea7d2dc790 |
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font_01_sfnt_off00010d32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D32 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012548.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12548 | 9764 bytes |
SHA-256: 21dfc36e42830b74a4e8a1f63e9afcd65d5e47f41466846566b1773ccb161f9a |
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