MALICIOUS
82
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many of which are associated with link farms and disposable hosting. The presence of a 'download button' heuristic further suggests a malicious intent to trick the user into downloading a payload. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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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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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://chcial.ru/uplcv?utm_term=fortnite+battle+royale+free+skins PDF link annotation
- http://cimkezes.hu/uploads/ckfinder/userfiles/files/3918064756.pdfIn PDF document text
- https://herfection.herfection.tw/upload/ckfinder_temp/files/20210909095556.pdfIn PDF document text
- https://lapalettedesarts.fr/gestion/file/daxuxexaledegepeserez.pdfIn PDF document text
- http://mayepnuocmia.vn/data/ckfinder/files/61848050500.pdfIn PDF document text
- https://vibanghanoi.com/uploads/files/mefezevapaxogetazo.pdfIn PDF document text
- http://beautifulmoda.com/userfiles/files/ximinomusew.pdfIn PDF document text
- http://dooroc.com/tk/upload/file/41496408069.pdfIn PDF document text
- https://saunadlaciebie.pl/userfiles/file/30877283385.pdfIn PDF document text
- http://huynhgiabaohotel.com/uploads/FCK/file/48378193027.pdfIn PDF document text
- http://xn--2-140-swe8h.xn--p1ai/files/rupiwimovedubafabafu.pdfIn PDF document text
- https://duel.pl/userfiles/file/40004530178.pdfIn PDF document text
- http://lube-stc.com/ckfinder/userfiles/files/8338390919.pdfIn PDF document text
- https://beta.nhatthiengroup.com/files/uploaded/files/likobiwizefevenimotatumag.pdfIn PDF document text
- http://salespate.com/userfiles/file/36558017448.pdfIn PDF document text
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132e13c5d4e9---71908859469.pdfIn PDF document text
- https://fullprotec.com/ckfinder/userfiles/files/11704998263.pdfIn PDF document text
- http://frezerovka.by/images/fxeditor/file/41592695128.pdfIn PDF document text
- http://www.jobibon.com/admin/userfiles/file/pitawedizudumadurajupo.pdfIn PDF document text
- http://blow-w124.com/js/upload/files/2040098797.pdfIn PDF document text
- http://quangphong.vn/uploads/image/files/diludodudap.pdfIn PDF document text
- https://ppuhperspektywa.pl/files/edytor/file/6344508920.pdfIn PDF document text
- https://ms2oke.com/contents/files/pexedowefemifamoru.pdfIn PDF document text
- http://batterseataxi.com/survey/userfiles/files/71603933759.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_off0000e16b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE16B | 18056 bytes |
SHA-256: a59ccde981a7831c33cd54d06a2a15dd129a2653e20d63b96831e6d92e8327ab |
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font_01_sfnt_off000110c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110C2 | 10532 bytes |
SHA-256: 8209bc964943dff7835ce7dcf54ce9b074929b36de6908467456d6d78e62e739 |
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font_02_sfnt_off000128df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128DF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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