Malicious PDF — malware analysis report

Static analysis result for SHA-256 42547706bba54fc3…

MALICIOUS

PDF

80.9 KB Created: 2021-10-09 09:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: b73446d8f4ddf4d444058ae4c9b78296 SHA-1: bb88c4dc80300036d6333a0a7a448bc9833c12cc SHA-256: 42547706bba54fc3f9f4f32b14c8bda56acf6ef850381b864b919c72026fc8f9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ketchas.ru/uplcv?utm_term=similar+triangles+proof PDF link annotation
    • https://jamurgoreng.net/contents/files/95461592246.pdfIn PDF document text
    • http://ccsctda.com/ckfinder/userfiles/files/20210923_190328.pdfIn PDF document text
    • http://snieznik.pl/userfiles/file/56039823463.pdfIn PDF document text
    • http://radio-salsa.fr/php/rs/filesupload/file/nobupig.pdfIn PDF document text
    • https://living-stone.lu/userfiles/files/tepuloserigep.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/lawalesokonosumekipatugok.pdfIn PDF document text
    • http://ros.by/ckfinder/userfiles/files/75682927831.pdfIn PDF document text
    • http://ogcdc.org/uploads/ck_upload/files/domadokomifakokuxogif.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20211008160002088.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/465aba94524f88785a89e3d9437dd192/74373110675.pdfIn PDF document text
    • https://kolkatanagariksammelan.org/ckfinder/userfiles/files/4675242968.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/16150c29631c18---62881723256.pdfIn PDF document text
    • https://gemwares.artchy.com/userfiles/file/30416497304.pdfIn PDF document text
    • https://www.nickelmarket.co.za/includes/ckfinder/userfiles/files/poposuluxuwedo.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2021092917212973499.pdfIn PDF document text
    • https://pilot-nav.socksnbows.com/ckfinder/userfiles/files/50420731106.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146aded07d4d---23120443596.pdfIn PDF document text
    • http://duet-czluchow.pl/userfiles/file/58302620352.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/1bhqjv8kpqsmv4l6i9qo8rqn9j/179479414.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16132c68fe9543---40391075262.pdfIn PDF document text
    • https://goldengatetaichiqigong.com/userfiles/file/sorajat.pdfIn PDF document text
    • http://ttmm.co.jp/ckfinder/userfiles/files/65278408738.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/nudatirukuw.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_off0000d3a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ebb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB2 19192 bytes
SHA-256: d1865f2b678b4392c9e64f44e3471a2d3f583fe09602b4b7c9712ced0cd3cb34
font_02_sfnt_off00011db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB6 10776 bytes
SHA-256: 1146f8e8907d7ebab6f3c4a4c56a5a690c9d9223383888c1ad885fb888439913