MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm pointing to various domains, some of which are hosted on compromised CMS uploads, suggesting an attempt to obscure the final destination or leverage trusted-but-compromised infrastructure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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 https://sbsoftware.ro/admin/userfiles/file/fexol.pdf In PDF document text
- https://digiconelectronics.com/media/90639865060.pdfIn PDF document text
- http://4bx.pl/public/file/luwawefumeve.pdfIn PDF document text
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1614caade617aa---71385128917.pdfIn PDF document text
- http://szkolaprzybranowo.pl/ckfinder/userfiles/files/17955898896.pdfIn PDF document text
- http://1-sanya.com/blog_images/blog_/file/dorukipivulolo.pdfIn PDF document text
- http://dichvubaove.online/upload/files/gufirurajologotubanisom.pdfIn PDF document text
- http://studioarchperissinotto.eu/userfiles/files/27968088352.pdfIn PDF document text
- https://smg.bid/ckfinder_userfiles/files/xarofogizosotixojese.pdfIn PDF document text
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161442c6be5cde---52821154241.pdfIn PDF document text
- http://csc0871.com/userfiles/file/20211009021148_yn0eo0.pdfIn PDF document text
- http://www.sindafaz.com.br/admin/editor/ckfinder/userfiles/files/25042058863.pdfIn PDF document text
- http://wcsps.com.tw/ckfinder/userfiles/files/86047247374.pdfIn PDF document text
- https://fibaquitaine.fr/cebatrama/userfiles/files/51698025606.pdfIn PDF document text
- http://egyptlance.com/userfiles/file/gatevepekibe.pdfIn PDF document text
- https://abicecream.ru/ckfinder/userfiles/files/rowilowiwu.pdfIn PDF document text
- https://karlschool.org/uploads/files/202109240757168472.pdfIn PDF document text
- http://heydarbaba.org/resimler/files/gilefagor.pdfIn PDF document text
- http://dealershop.es/camarasegovia/userfiles/file/48783767894.pdfIn PDF document text
- https://esz.jp/img/editor/files/5421066468.pdfIn PDF document text
- http://machi-tomo.xyz/js/ckfinder/userfiles/files/52917778457.pdfIn PDF document text
- https://emmaushuis.org/pages/botiv.pdfIn PDF document text
- http://thietkewebbacninh.com/webroot/img/files/6348285750.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/53ecae9d27b4a4e3e5b9e2326110dcc5/nadugatogigosexadokovud.pdfIn PDF document text
- http://feedproxy.google.com/~r/MbOu/~3/u-9XGpgKpwY/uplcv?utm_term=disrupting+the+classPDF 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_off0000dc16.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC16 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f42d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF42D | 10636 bytes |
SHA-256: 7ba7ea07163990fc1968100af3d8672a648dabe921ad43ae62bb4531780a724b |
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font_02_sfnt_off00010c77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C77 | 19332 bytes |
SHA-256: 7f76e0cf38fb9afeb421c21ec0390fd6d764757bdec3078910edd06a21d97d7d |
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