MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, with a critical detection score. It contains embedded JavaScript and numerous external URIs, many of which point to a link farm hosted on disposable domains. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a pattern of using multiple distinct hosts with a single link each, suggesting an attempt to obscure the true destination or evade detection. The embedded JavaScript likely facilitates the redirection to these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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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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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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://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16138c45942e6f---95913581609.pdf In PDF document text
- https://i-chat.tw/js/ckfinder/userfiles/files/89184362896.pdfIn PDF document text
- http://huyminhplastic.com/upload/files/wemolirevaxisutigasekul.pdfIn PDF document text
- http://sportsgarten.com/editorData/file/lowefujafebobamovag.pdfIn PDF document text
- http://yachtales.net/admin/userfiles/files/gifevujirebowagovak.pdfIn PDF document text
- http://mail-business.ru/uploads/file/22829088499.pdfIn PDF document text
- https://www.bramfordgc.co.uk/ckfinder/userfiles/files/lumomelanofopolewu.pdfIn PDF document text
- https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/28783460847.pdfIn PDF document text
- http://realfootball.gr/userfiles/file/8522963078.pdfIn PDF document text
- http://area100impianti.it/userfiles/files/teguvokep.pdfIn PDF document text
- http://abpjse.news-read.com/upload/files/49129354791.pdfIn PDF document text
- http://www.beautyvogue.ch/Files/file/petajagumufegoridujalizis.pdfIn PDF document text
- https://natyabio.com/uploadfiles/muxemorikipepesupu.pdfIn PDF document text
- http://hulstcustoms.ru/uploads/files/66659636503.pdfIn PDF document text
- http://tagsu.com/attachments/fckattachments/file/51574856265.pdfIn PDF document text
- https://stl-log.com/htdocs/cljr/data/files/35565493297.pdfIn PDF document text
- http://tiwtactic.com/userfiles/files/vatunogaw.pdfIn PDF document text
- https://ginniglobal.com/uploads/file/82414907027.pdfIn PDF document text
- https://southernwashpros.com/nbloom/fckuploads/file/776785941.pdfIn PDF document text
- http://pkpneu.cz/userfiles/file/pusilarasikusado.pdfIn PDF document text
- http://alsace.annuaire-regional.com/ckfinder/userfiles/files/sodikebuxipafuv.pdfIn PDF document text
- http://cainghienbinhduong.com/uploads/userfiles/file/50049357292.pdfIn PDF document text
- https://bitree.ru/ckfinder/userfiles/files/71385275654.pdfIn PDF document text
- http://billedbutikken.dk/articlefiles/file/falizinifekusiwu.pdfIn PDF document text
- http://icloudcleaners.com/uploads/account/autoresponderfiles/vovurabegojowepenedu.pdfIn PDF document text
- http://restaurant-lyons.fr/userfiles/file/jisefilorivirupabopawu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=aloha+oe+ukulele+pdfPDF 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_off0000ca68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA68 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e27f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE27F | 10204 bytes |
SHA-256: 00436ab5e8761813294efb25e8b574f06aa473567933230f2b20a6d6076c359a |
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font_02_sfnt_off0000f97f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF97F | 19004 bytes |
SHA-256: 216b29092f3a02a70653a0ba967c960e124663b2f79cba61c2ca2a3c7525b61e |
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