MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for malicious PDFs. The PDF also contains numerous external URIs, including one pointing to 'laborke.ru' with a 'utm_term' parameter suggesting a tracking or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware download sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://laborke.ru/uplcv?utm_term=ld+player+apk PDF link annotation
- http://phantasos.org/userfiles/file/vuritudadoxef.pdfIn PDF document text
- http://papaicountrylodge-longstay.com/user_img/files/70766364101.pdfIn PDF document text
- http://due.pt/js/ckfinder/userfiles/files/latetuzukanebim.pdfIn PDF document text
- http://hefei.chinatupai.com/web/js/ckfinder/userfiles/files/30268229453.pdfIn PDF document text
- http://teknis.it/userfiles/files/muvivaderijiwotiti.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/dujofovaraxigigenubutas.pdfIn PDF document text
- http://sportingfoundation.com/uploads/file/tomidafegisolefen.pdfIn PDF document text
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/161348c847b6b0---runifokuvavojew.pdfIn PDF document text
- http://avtokit116.ru/!upload/files/66368702482.pdfIn PDF document text
- https://perfecthospital.net/FCKeditor/file/76004872894.pdfIn PDF document text
- http://erex.hu/upload/file/tamibapetu.pdfIn PDF document text
- http://drivescuolaguida.it/userfiles/files/zavidapafu.pdfIn PDF document text
- http://www.casasemio.com.br/ckfinder/userfiles/files/wujin.pdfIn PDF document text
- http://xn--spreewaldpension-lbben-9lc.de/meineBilderAlbertGrundschule/file/67592312886.pdfIn PDF document text
- http://kiszelyugyvediiroda.hu/docs/file/lekuwomar.pdfIn PDF document text
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/din6iie0u2pe69vnm8b03gni27/badixenajofopanu.pdfIn PDF document text
- https://pointvirgule.ca/upload/editor/file/revokifobemuve.pdfIn PDF document text
- http://cambresisemploi.fr/ckfinder/userfiles/files/vagetoz.pdfIn PDF document text
- http://bigcool.net/webroot/img/files/74210979855.pdfIn PDF document text
- http://kaupa.cz/userfiles/file/22842741316.pdfIn PDF document text
- https://tims.ro/ckfinder/userfiles/files/zokapenojiwu.pdfIn PDF document text
- https://groupburuemas2.com/contents/files/vezegekukixusamoko.pdfIn PDF document text
- https://threadworx.com/thread/admin/uploads/file/86113157023.pdfIn PDF document text
- http://taiwanquinoafamily.com/shopadmin/upload/files/lakidoso.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_off0000d8f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8F0 | 9964 bytes |
SHA-256: d25fe489b2749b3a2a216cab981567a3ec67b025b3fa2b623998f5bf07f1bf0b |
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font_01_sfnt_off0000ef1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF1C | 18204 bytes |
SHA-256: 6843fc7be5b409789ba4b8402783e4cbe1e63c96874a1bfe4783bf35d1b4a199 |
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font_02_sfnt_off00011ea7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EA7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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