MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code within PDF documents. It also includes numerous external URIs, such as https://chcial.ru/uplcv?utm_term=cnc+programming+app+for+android, which are likely used to redirect users to phishing sites or download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 https://chcial.ru/uplcv?utm_term=cnc+programming+app+for+android PDF link annotation
- http://tpt.taipei/asset/uploads/files/lojifatifimovodepo.pdfIn PDF document text
- https://coastalholidayproperty.com/ckfinder/userfiles/files/fononorifanarovoxera.pdfIn PDF document text
- http://jsdarvin.com/files/makomakit.pdfIn PDF document text
- http://vibrobeton.by/pics/files/6334333084.pdfIn PDF document text
- http://nage-z.com/ckfinder/userfiles/files/67776787805.pdfIn PDF document text
- http://villaelen.it/userfiles/files/petajaj.pdfIn PDF document text
- https://accounting789.com/ThImg/file/11549557914.pdfIn PDF document text
- https://ahl2005.com/ckfinder/userfiles/files/pumilumovenatafefolesen.pdfIn PDF document text
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb8d8df4f2---15151932074.pdfIn PDF document text
- https://newsru.md/upload/userfiles/files/28342271273.pdfIn PDF document text
- http://xn--3bsx3iw22bmot.com/filespath/files/20210912085242.pdfIn PDF document text
- http://tongshengchem.com/ckfinder/userfiles/files/2202989656.pdfIn PDF document text
- http://perechen-izdaniy.ru/js/ckfinder/userfiles/files/dodogikukoxakijexabi.pdfIn PDF document text
- http://hanahana.vn/media/ftp/file/24161050766.pdfIn PDF document text
- http://americandeliorder.com/uploads/files/zowok.pdfIn PDF document text
- http://americasbestmanassas.com/uploads/files/kuvosomamikimitozutavop.pdfIn PDF document text
- https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/28783460847.pdfIn PDF document text
- http://kasargod.net/uploads/file/14657375886.pdfIn PDF document text
- http://tercovci.cz/files/file/tusoxozosovixolupufe.pdfIn PDF document text
- http://okuninka-biale.pl/userfiles/file/razevezurobuvobor.pdfIn PDF document text
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16139d17dc8087---kinekoxo.pdfIn PDF document text
- https://mamo-tato.ro/userfiles/file/zubeko.pdfIn PDF document text
- https://makanbanyak.net/contents/files/zoverup.pdfIn PDF document text
- https://stormester.no/files/file/89107546980.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_off0000dd06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD06 | 10552 bytes |
SHA-256: 45ca0fc16dc584ea2203e4d38942ab05c64b0fa6117bcd5f63cba90cef5506d0 |
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font_01_sfnt_off0000f4c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4C9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010cdb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CDB | 17420 bytes |
SHA-256: 8beef02e6c7f7e944d77c4903c7f219964a1b985b8bbb60d7bddeb43508b88c9 |
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