Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5df1499e46ee93e…

MALICIOUS

PDF

78.9 KB Created: 2022-04-12 19:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 87cdb02ae1b451e5ffdb93511614123a SHA-1: eb93fb18a045c6ad2644ebd55b6ce8d94901bd0f SHA-256: c5df1499e46ee93e1c813b765f0a16e0db29821de9e5618f085032a1ab156724
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yubit.co.za/YmrXLWy8?keyword=what%20is%20poisson%20process PDF link annotation
    • https://vewufozokan.weebly.com/uploads/1/3/1/0/131071297/b2c9a64e132576c.pdfIn PDF document text
    • https://mitabepomumo.weebly.com/uploads/1/3/1/8/131872015/4ad33820dca39.pdfIn PDF document text
    • https://porterbrothersltd.com/app/webroot/uploads/28582977685.pdfIn PDF document text
    • https://baxodibidixajit.weebly.com/uploads/1/3/5/3/135311382/2442088.pdfIn PDF document text
    • https://rioclaro.com.co/kcfinder/upload/files/5529157410.pdfIn PDF document text
    • http://melvin.cz/data/26474815410.pdfIn PDF document text
    • https://a-1commercialkitchenservices.com/ckfinder/userfiles/files/feguzafebameg.pdfIn PDF document text
    • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/2691624326.pdfIn PDF document text
    • http://master-stroi76.ru/userfiles/file/wulafafesinamoxenekirixi.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20220322_5EBC7D1D7A2ACC44.pdfIn PDF document text
    • http://obedovice.cz/userfiles/file/91796859559.pdfIn PDF document text
    • https://mingyi-lock.com/data/file/userfiles/files/beluxepinitebelil.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/162263861484f1---bozavaxuguto.pdfIn PDF document text
    • https://menufepu.weebly.com/uploads/1/3/1/1/131163725/fekafudinekanup.pdfIn PDF document text
    • https://marademuwuzam.weebly.com/uploads/1/3/4/3/134396837/7902288.pdfIn PDF document text
    • https://www.cygnusdvlp.in/nitdurgapur/uploads/editorUploads/userfiles/files/zivirujuk.pdfIn PDF document text
    • https://rifituxajigibik.weebly.com/uploads/1/3/4/5/134519767/ninis_duxesuju_winabip_wusebowozopi.pdfIn PDF document text
    • http://rhythm-thailandagent.com/attach/file/62859075486.pdfIn PDF document text
    • http://weldbook.net/upload/files/17208306557.pdfIn PDF document text
    • https://lefoteliwe.weebly.com/uploads/1/3/4/0/134095852/bevom_zizojugepi.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_off0000cecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DE 18392 bytes
SHA-256: 5d326998981c9f2ee6abf15c6849d748a753d5ba2b7807dd4b4ae7612f1941d8
font_02_sfnt_off0001175e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175E 10420 bytes
SHA-256: 9f10b57d3a0cf0e1456649bdd45d3e5d2416814e5fbf6ec0ab0db10b1e5c6857

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