Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b641fe90ac092fb…

MALICIOUS

PDF

86.0 KB Created: 2021-07-14 09:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 8f98d09f3d7981d41c0404a499d6bd5d SHA-1: acc49b08f36c151a581fe90b82b42a5f422a8292 SHA-256: 2b641fe90ac092fb47d23783442f960fe1d36fbf6b0bc88b5e07a16338c4741c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad1c26a7d4f---42119609970.pdf In PDF document text
    • http://cloverdiamond.com/file/ferovola.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721931ecbcd---46502649737.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e620e5029eb---lumaxerisaruxawular.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/67038467405.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a713bba1114---47650697977.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16074aecc84e2c---82694169211.pdfIn PDF document text
    • http://verypool.cn/images/upload/File/22178478339.pdfIn PDF document text
    • http://saipanbooking.com/FileData/ckfinder/files/20210626_571CB1C209DFD7E8.pdfIn PDF document text
    • http://bwc.lt/i/dasokalakuxewi.pdfIn PDF document text
    • http://easyliveconstruction.com/ci/userfiles/files/67684091482.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b41921e211---20462812010.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854987eb794---35412692727.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a0452634b2d---58775645995.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/98991721131.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1606f42df78455---60536495774.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/56746391658.pdfIn PDF document text
    • http://accronline.com/userfiles/file/devifuwewenawux.pdfIn PDF document text
    • http://lws-realestate.com/userfiles/files/52146731034.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/s2lgdg4taf4sf1bq3hfmh06sj6/81376969321.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/kumoxorepezo.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/bc19b9fc088cc6a4cb7a148b19802dcc/karoti.pdfIn PDF document text
    • http://blevy.com/ckfinder/userfiles/files/72732480901.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/36bc51c45484fb50aaffbb097cadf9f2/tenigulilinegasowos.pdfIn PDF document text
    • https://confetti-seasons.ru/upload/files/8808664506.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=best+jobs+without+educationPDF link annotation
    • 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_off0000ecf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF0 10828 bytes
SHA-256: 2f5398ff46f5b075b7d2c518ec3a4ee20dabd8ae0ae0bb72a397a9b50bc44bd6
font_01_sfnt_off000105f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E07 17088 bytes
SHA-256: 6f3ffc54d6f92549a813dcf633c04c8146cdfa2e03fc03030031f18d81b21163