Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb873c22ec69b29c…

MALICIOUS

PDF

76.6 KB Created: 2022-04-25 13:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 8434e48dccc35758739900b5ebe6f4a7 SHA-1: b8f03e68f816806447de9ce34c89f5ffd0c9325c SHA-256: cb873c22ec69b29c5ac282a7b6d5e76f0c7fc66bfb392549c0e67f43ee85c83b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://colod.co.za/YmrXLWy8?keyword=romance%20of%20the%20three%20kingdoms%2014%20tips%20and%20tricks PDF link annotation
    • https://lodewaga.weebly.com/uploads/1/3/7/5/137518990/mabefimijoli.pdfIn PDF document text
    • https://ronukava.weebly.com/uploads/1/3/4/8/134885886/duzina_memav.pdfIn PDF document text
    • http://chinnanaidoo.org.za/kcfinder/upload/files/74725000580.pdfIn PDF document text
    • http://rilta.net/userfiles/files/zosusomulenoxofifamif.pdfIn PDF document text
    • https://datirelegewewat.weebly.com/uploads/1/3/4/3/134329883/sewiradewudeba.pdfIn PDF document text
    • http://isisorganizasyon.net/panel/kcfinder/upload/files/xopubuvujegabod.pdfIn PDF document text
    • http://nbaindia.nic.in/includes/ckeditor/plugins/kcfinder/upload/files/gilefibojumoguzus.pdfIn PDF document text
    • https://suruburi.net/mm/file/76563771005.pdfIn PDF document text
    • https://xobiverubagosag.weebly.com/uploads/1/3/4/7/134711173/xabojizid.pdfIn PDF document text
    • https://airbays.com/userfiles/file/borenakeleve.pdfIn PDF document text
    • https://comillaspostgrado.es/userfiles/file/lexekajajejodop.pdfIn PDF document text
    • https://jewepixixa.weebly.com/uploads/1/3/0/8/130814248/2581494.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/162412b949556a---54600254685.pdfIn PDF document text
    • http://netpart.hu/kcfinder/upload/files/98287749266.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/4383242e38f436e7b7e354cb4d4826f7/fonakutadisazibavuluru.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/48756514998.pdfIn PDF document text
    • https://juzunuxav.weebly.com/uploads/1/3/4/3/134316531/4584239.pdfIn PDF document text
    • http://plymouth-logs.co.uk/ckfinder/userfiles/files/doteboxubu.pdfIn PDF document text
    • http://park-seversk.ru/other/js/ckfinder/userfiles/files/95269718175.pdfIn PDF document text
    • http://bcma.com.bd/backend/web/kcfinder/upload/files/2479516513.pdfIn PDF document text
    • https://blgjad.com/upload/files/96729821966.pdfIn PDF document text
    • http://makaroma.fr/upload/file/tezebize.pdfIn PDF document text
    • https://pelesiuvalymas.lt/i/File/xisedemofabijivav.pdfIn PDF document text
    • http://aristosaigonhotel.com/uploads/files/xepogikeroruwijinapigux.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 extracted file (font_00_sfnt_off0000c4b8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c4b8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B8 11288 bytes
SHA-256: ca1564b26df465466c7ed8d5958833e8335a4ba27f3e4718b63ee42253688361
font_01_sfnt_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 17296 bytes
SHA-256: dfd519366d80f31894b34504aedea5940ffd0abea0f8b765bb52355ffb0de4a9
font_02_sfnt_off00010bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1