Malicious PDF — malware analysis report

Static analysis result for SHA-256 4408ebdabe77ce69…

MALICIOUS

PDF

71.1 KB Created: 2021-02-12 16:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8c6c5eb322a40e5ded942107c7a60184 SHA-1: 3ba85bfd15da194d254ceff69913690406971e73 SHA-256: 4408ebdabe77ce69291bbcb88dcd0d65d5a648e9618dd0fdee4f01d5d1e25a8d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=immanuel+lutheran+school+wentzville+fast+direct PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365642/normal_600d9a7956e01.pdfIn PDF document text
    • http://tiwigibafofovit.iblogger.org/binder_divider_tabs_template.pdfIn PDF document text
    • https://kajubogoxin.weebly.com/uploads/1/3/0/9/130969430/putatowi_binadavewison.pdfIn PDF document text
    • https://bifugojatomawak.weebly.com/uploads/1/3/1/4/131437093/xemofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_600fe3525d374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_600f72e748f20.pdfIn PDF document text
    • https://menafemudiwifog.weebly.com/uploads/1/3/0/8/130813668/bb8b0663.pdfIn PDF document text
    • http://nujuxogo.iblogger.org/edgenuity_english_1_b_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/fetebutujo/gwYigW3/o_launcher_prime_1._2._1.pdfIn PDF document text
    • http://kugetogegus.iblogger.org/free_printable_tv_guide_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369318/normal_5ff84491c6218.pdfIn PDF document text
    • https://cdn.sqhk.co/kagixepo/cjhifhi/savings_goal_tracker_planner.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/cjiiavV/color_by_number_for_adults_online_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369191/normal_5fc7d5f789740.pdfIn PDF document text
    • https://pujowuvorokom.weebly.com/uploads/1/3/5/3/135347933/9fcd963a6df04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dukodisedibuji.epizy.com/properties_of_exponents_with_fractions_worksheet.pdfIn PDF document text
    • http://lufafutogixafu.rf.gd/cardiomiopatia_takotsubo.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/90848216805.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_off0000d90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90D 5400 bytes
SHA-256: 77091e00f00b8f6bfbf9e8addfaad0920fba3d51c94abb235e6df40f96296622
font_01_sfnt_off0000eb5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5B 10504 bytes
SHA-256: f7ba2330c8c40c42451be4669fc223bd344e63f455c7b806d54cf86854ce596b