Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d88f4471f10cb31…

MALICIOUS

PDF

82.9 KB Created: 2021-09-03 23:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: e920bb421c98677c8f5f96479d3a8a19 SHA-1: 2b8123e405c38f1126e9a11d65122ab56c696421 SHA-256: 5d88f4471f10cb3144a302055c2d7f82c24f6487f81889c2b2b2cf7e66143664
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/9dc79b4a30f0f93b3336b852d5ebc098/89729837127.pdf In PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/f0f53d11d8c4e3ffa194ed2fc8d8f924/92927419663.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5539c7434---ximezibigoze.pdfIn PDF document text
    • http://garankuccu.com/upload/fckimagesfile/30a6f622a4d45fb26e88ef760ba36f0b.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/itrv6gs40oijj7e25al0fuhe0m/fugonatutinuxevo.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092102cc083e---79332374841.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/dbddabea94f5abfa804e26a32c68a64f/60315269317.pdfIn PDF document text
    • http://hilltop1976.com/clients/24685/File/49009737396.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607db5454b01b---93102035234.pdfIn PDF document text
    • https://scapetime.net/images/website/user/files/laluzuno.pdfIn PDF document text
    • http://stroytehcentr.ru/images/file/fusaxunudodod.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/50965304674.pdfIn PDF document text
    • http://naucseto.cz/storage/35913797838.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/revokepovazuvozedujonigeb.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/2021662125473975.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161243a9a6a4d8---wivotubafalawedurezar.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/xobozugisivedi.pdfIn PDF document text
    • http://vendsol.com/userfiles/file/wodax.pdfIn PDF document text
    • http://kentcliffordreunion.com/clients/a/aa/aa84b18e55fac3ff3c25336c5005d9e5/File/jupita.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/3662958797.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/9f264jqq2e43h4atupsj0j3lbe/pukovotumorozaso.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/nulegulifepokatex.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/1b4e393f827b1f059c995cbfa5dc7209/tipatopip.pdfIn PDF document text
    • http://landpas.pl/upload/file/xuwoxapafumegaxulizof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=patrones+cajitas+de+regalo+manualidadesPDF 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_off0000dbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD1 18604 bytes
SHA-256: 3d4c36ec59d3ac87691002043caa84235a29acd7e91be142de2b31fe0190511a
font_01_sfnt_off00010ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB8 10944 bytes
SHA-256: 09015d15a8fa4f5a51fd0864b4f7c78f045aad927fb7d6641876082db0bc0547
font_02_sfnt_off000123e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1