Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7d927df99e57c7…

MALICIOUS

PDF

75.3 KB Created: 2021-11-10 07:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: c177413907309ed41bdc05e8df04ed6d SHA-1: c22d34664a5ca3226847192a810223c12c8cb0d5 SHA-256: cd7d927df99e57c7112206233d8ed862131a04f7e07e64547f54181fbda88f08
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://ecohort.com/userfiles/files/58457975360.pdf In PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/61859195.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/levexudu.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/66364868352.pdfIn PDF document text
    • https://euro-m.si/web/dokumenti/file/xigavewokulokuzapiwez.pdfIn PDF document text
    • http://de-ko-gmbh.com/ckfinder/userfiles/files/kerotapaxofagiditiwurid.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4402d3738---xibixagadunimavega.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/93105547526.pdfIn PDF document text
    • https://eventaipei.com/upload/files/26089147485.pdfIn PDF document text
    • http://sjatupornservices.com/file_media/file_image/file/45773516624.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148364cee102---vofibitusigoxewesupefejus.pdfIn PDF document text
    • http://makinsushi.com/uploads/files/57607732508.pdfIn PDF document text
    • https://berettyotv.hu/userfiles/files/54296479883.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1618b2cb3b1258---35477283322.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/33073110293.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16135ca7370e3b---gutimimododalotokexiro.pdfIn PDF document text
    • http://rsst77.ru/upload/files/tedaroru.pdfIn PDF document text
    • http://mertlakustika.cz/images/pages/file/bodedijizo.pdfIn PDF document text
    • http://acrclubinversores.com/files/galeria/files/54435552070.pdfIn PDF document text
    • http://geoscan.it/userfiles/files/89404095321.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1615d743fddac4---bipepipitekexojaxafizese.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/oscUj7J0Gjw/uplcv?utm_term=nursing+weakness+for+interviewPDF 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_off0000bfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFAF 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_01_sfnt_off0000d6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D0 18544 bytes
SHA-256: 9e278330f5b33bd6e623a13ac86d3d7b16e64f9f7aee9dd06b69b88c1edc7eb5
font_02_sfnt_off00010709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10709 10664 bytes
SHA-256: c4182d7c7444d63a525f8ebd65ef6d291b80201ad1420961300c533ecde4b9be