Malicious PDF — malware analysis report

Static analysis result for SHA-256 689ceb89e93bbe04…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 16:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f780ab2bb8b8c728d611e96e6da55aa5 SHA-1: 3a0143b98a7afe541e80a28edaf113cf8e2bfb37 SHA-256: 689ceb89e93bbe04a7d658ad49c0674b2619871294aefeebbe7a5b1a30d5ffe6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/award?keyword=software+engineering+theory+and+practice+4th+edition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421042/normal_603a45110bd22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5fe517f336c6f.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/electrolysis_worksheet_gcsej3meg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375504/normal_6002c69e8968c.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/gipggb2/who_dies_in_harry_potter.pdfIn PDF document text
    • http://rat-red.space/80637088298r04zv.pdfIn PDF document text
    • https://cdn.sqhk.co/lamijaluxeso/hp5n4he/pemifi.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/d1hcTOL/gofozu.pdfIn PDF document text
    • http://rrrrkkkkk.space/acing_civil_procedure_freeik6y7.pdfIn PDF document text
    • https://cdn.sqhk.co/jejekije/geBWiap/774764296.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_5fe63975a2934.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/FxgjiaU/54453576704.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/ejcz3de/75758565656.pdfIn PDF document text
    • http://obuv-kozha.ru/vitotetukemapuvowpuacz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/43673196951.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/riwapudepotirufupivusota.pdfIn PDF document text
    • http://fetekovabu.onlinewebshop.net/how_many_seashells_links_awakening.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FC 5592 bytes
SHA-256: 6dd2a7c51ef433743077e4199a5b1830ee89e35555b0e86dd6cb007fa716c8e4
font_01_sfnt_off0000eb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB22 10352 bytes
SHA-256: b55a4b209d1da60c1fa8a8855abfdb6885d66d119ad40c0271387738b97d22b2