Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dec4abde39cb3c…

MALICIOUS

PDF

89.0 KB Created: 2021-07-31 01:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 3cdf32eafea9102f2d3c605008eef88c SHA-1: 3f4d56bb3f88d228898bbaee19c867f503ade004 SHA-256: c5dec4abde39cb3c621674662ad7884c403798f7700f1621904bca5e0be1c4f7
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://philabc.ru/uplcv?utm_term=how+to+pay+off+mr+cooper+mortgage PDF link annotation
    • https://mecaniquekd.ca/upload/file/gofixu.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/97355832812.pdfIn PDF document text
    • http://xn--12cfu9bc1efac9a9azfdsb7b9d1f0j.net/ckfinder/userfiles/files/30037856534.pdfIn PDF document text
    • https://latework.cz/soubory/kegasose.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/bfe82b84784e18035edb66b6965c52e4/63801334635.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/53565218730.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608caaa5046bd---12235130199.pdfIn PDF document text
    • http://topspeed4wd.com/ckfinder/userfiles/files/bezezef.pdfIn PDF document text
    • https://medicentrumnz.eu/medicentrum/files/file/jozezezomoneli.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1608db0df2d40f---76307186073.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/ae5e7516b529b6b63a6cf6f66bcf4f93/97545394801.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/df23f02b10e662e96d2903ae6ab787d9/18169493851.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/92df4d9ab2ef716ef78a5681045c04ae/12590843906.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b253393fd71---gunaguv.pdfIn PDF document text
    • http://giprozdraw.ru/ckfinder/userfiles/files/nalanikuxevaledobetimu.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/42489491819.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f796aa850---zejepakolemixuboz.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/3febecf98807821c4579aae2e5b8b9ff/kosolezapuxod.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/b7efb5cd86e476639014ef222785d483/79210748378.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160733e1d941c8---toguvikeko.pdfIn PDF document text
    • http://gerocuki.hu/user/file/zubagefosajelez.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a50fa6b75e8---lubotagonofuwo.pdfIn PDF document text
    • http://phatnang.com/media/ftp/file/91650638911.pdfIn PDF document text
    • https://monographie.com/ckfinder/userfiles/files/fufapejexu.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_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11104 17128 bytes
SHA-256: bd2d46979214485b34178ed2f984cd80f2c8b1f0158ba583984922007259888f
font_02_sfnt_off00013de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE4 10604 bytes
SHA-256: 298a6723d3e08d82ed368fdfb0a00d476c9daa61c2fc9cff89b0d9c9ad1da41f