MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous URLs, many of which are hosted on disposable domains or compromised CMS uploads, forming a link farm. The presence of PDF_JS and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, along with the ML classifier and ClamAV detection, strongly indicates malicious intent. The primary goal appears to be distributing further malware through these links, disguised as a legitimate download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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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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://queure.ru/uplcv?utm_term=download+chrome+os+iso+file PDF link annotation
- https://dintek.eu/uploads/file/wemirimibupijamanesopenab.pdfIn PDF document text
- http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/27879922211.pdfIn PDF document text
- https://novitas.ro/files/74925998267.pdfIn PDF document text
- http://www.radanhorse.com/resource/files/67307402020.pdfIn PDF document text
- https://tndvn.com/js/ckfinder/userfiles/files/29108940691.pdfIn PDF document text
- https://denimder.org/resimler/files/sedabujolita.pdfIn PDF document text
- http://machin.kr/userData/board/file/meguxigerawami.pdfIn PDF document text
- http://thrifty-uy.com/files/others/6769888653.pdfIn PDF document text
- http://bulk-supplies.com/userfiles/files/63965111709.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/bdf5jjgat9ajt1t3f68dd18u57/xabemadomaj.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/bf385cc5f958035053816e8b63719b0b/18802008494.pdfIn PDF document text
- http://studiotecnicopetrillo.eu/userfiles/files/vosolugonemedesikak.pdfIn PDF document text
- https://linlinline.biz/js/ckfinder/userfiles/files/pusojesezimijebikav.pdfIn PDF document text
- https://newtech-utm.pl/userfiles/file/44644298366.pdfIn PDF document text
- https://nirmalujjwal.com/public/ckfinder/userfiles/files/26253214059.pdfIn PDF document text
- http://derkwoo.com/upload/editor/files/denanomo.pdfIn PDF document text
- http://hasicimosnov.cz/foto/Image/file/27814304896.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16132bdd93cc34---fulozetelirapiwulone.pdfIn PDF document text
- https://cs168.tw/upfiles/editor/files/5492743052.pdfIn PDF document text
- http://partnercable.com/files/87024621788.pdfIn PDF document text
- http://aokunoil.com/ckfinder/userfiles/files/64597791149.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e9a242e9e4---gaburisodilejexitemakez.pdfIn PDF document text
- http://uitvaartverzorgingsindex.nl/images/uploads/ripiz.pdfIn PDF document text
- https://www.edm-medical.net/ckfinder/userfiles/files/47795915514.pdfIn PDF document text
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/9a9224463608e1383f3cf0cc8fbb97cc/30643139843.pdfIn PDF document text
- https://heritran.vn/uploads/news_file/94060283482.pdfIn PDF document text
- http://chatfieldfarms101.com/userimages/2437538757.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_off0000ca0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA0C | 10728 bytes |
SHA-256: 3c03765b85a522c0ba35b8fdfab1a3005d1097c0115d013f0f649dbe2c4a3718 |
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font_01_sfnt_off0000e282.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE282 | 19140 bytes |
SHA-256: d2ea4905cc41064ca22222fd51354b9c354230bbf50373422dba88a7e9d96b55 |
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font_02_sfnt_off00011395.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11395 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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