Malicious PDF — malware analysis report

Static analysis result for SHA-256 1919cf595b23ffe7…

MALICIOUS

PDF

72.0 KB Created: 2021-10-06 04:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: d2ac367f288610317f7d6a97d04b85f6 SHA-1: 1285a216712df9a0ff16829163425868c3223fff SHA-256: 1919cf595b23ffe746b414db7d8276b63db387607ba546ff76df4bb93d1fb4e4
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://smidgel.ru/uplcv?utm_term=autocad+2010+free+download+full+version+student PDF link annotation
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/59087787181.pdfIn PDF document text
    • http://djarkitek.com/temp/vinney/HTML/userfiles/file/47602814214.pdfIn PDF document text
    • http://jamalcar.com/userfiles/file/64363606013.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/55522613525.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/bevezeridage.pdfIn PDF document text
    • https://dispecom.com/cms_dispecom/sgi_userfiles/userfiles/files/wenig.pdfIn PDF document text
    • https://spitalmoldovanoua.ro/ckfinder/userfiles/files/rekovawuzutapaposit.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/61247082523.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea37277f92---84748933581.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425b2e4d812---18661446022.pdfIn PDF document text
    • http://daivupaint.com/img-chamthi/files/sisuxizenemimor.pdfIn PDF document text
    • https://youkuvpn.com/upload/files/toguremaverovozanasuku.pdfIn PDF document text
    • http://z-sinpro.com/upload/files/tusogewidikewulijebubuvix.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/15de83bd748380a096b90c66298a865e/faruguxatimukemokarajok.pdfIn PDF document text
    • http://dichvubaove.online/upload/files/35823467168.pdfIn PDF document text
    • https://htapigroup3.com/contents/files/43384918710.pdfIn PDF document text
    • http://candientuvibra.com/images/file/pumepomomonamalulosiju.pdfIn PDF document text
    • https://groupunsur3.com/contents/files/febaxufi.pdfIn PDF document text
    • http://thuannam.com/image/files/vuziji.pdfIn PDF document text
    • http://pneusmarene.it/images/file/bodowap.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/35100834015.pdfIn PDF document text
    • https://enilubricant.hoakhanh.vn/uploads/image/files/59683825413.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog/file/20395830797.pdfIn PDF document text
    • https://ietc-oman.saktoon.com/userfiles/files/lurulukoxopez.pdfIn PDF document text
    • http://signauction.net/userfiles/file/47036821932.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.

FilenameKindSourceSize
font_00_sfnt_off0000b939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB939 10996 bytes
SHA-256: d7d3739d9de8fdcfe9b441a380feca4f4a3f0922afa60283102877a5a6c20173
font_01_sfnt_off0000d31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2E 15296 bytes
SHA-256: 8f778c93a7c19930610bf187caaf9934bcb803bd71dceb585914a59edffd3f9e