Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e98ffa9d864554b…

MALICIOUS

PDF

78.9 KB Created: 2021-02-11 16:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 137a8be337460a285f36fd296072225b SHA-1: 2e2d386a48578d2cace76e8f72c79122dc69acb7 SHA-256: 4e98ffa9d864554bde7b3ed69e5a683acdc533c43d18fbbfd054f693765a27f4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://druttle.ru/wix?keyword=dfw+skylink+map+a+to+c PDF link annotation
    • https://limofagis.weebly.com/uploads/1/3/4/6/134640762/69001.pdfIn PDF document text
    • https://guroposuz.weebly.com/uploads/1/3/4/4/134469393/taleroxasi-torebakofamo-nunoratet-dezokoxug.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/shfjcLl/invasion_of_poland_ww2_timeline.pdfIn PDF document text
    • https://towizitubozabo.weebly.com/uploads/1/3/5/4/135400713/jokifopefesime-kovuk.pdfIn PDF document text
    • https://werumitepoli.weebly.com/uploads/1/3/0/7/130739038/sevejeziro.pdfIn PDF document text
    • https://lelopotive.weebly.com/uploads/1/3/0/7/130738546/pukutodibejor-vanupodedarexu-didudizododa-jiteg.pdfIn PDF document text
    • https://cdn.sqhk.co/vabadoma/sgcjjdf/best_cool_ringtone_2019_mobile_mania_mp3_download.pdfIn PDF document text
    • https://noxawopaxuroge.weebly.com/uploads/1/3/1/3/131398379/4409671.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380705/normal_5ffbdab8b2307.pdfIn PDF document text
    • https://mefixakiderix.weebly.com/uploads/1/3/4/3/134319494/tosinugag-komiz-masararenanux-pokuju.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/WiijdCy/free_printable_coordinate_graphing_pictures_worksheets.pdfIn PDF document text
    • https://benanuvez.weebly.com/uploads/1/3/0/8/130813453/a36aab995.pdfIn PDF document text
    • https://lasogevedona.weebly.com/uploads/1/3/1/3/131398076/79ee3dc3f5.pdfIn PDF document text
    • https://tilawifi.weebly.com/uploads/1/3/4/4/134480999/6571497.pdfIn PDF document text
    • https://timelasabo.weebly.com/uploads/1/3/4/3/134345700/mikejet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379602/normal_5fe08955d0214.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/zifilobesumafi/private_facebook_video_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/best_cv_template_2019_doc.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_off0000f9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CA 5324 bytes
SHA-256: 1db24782d33eca2055a5395b62d95f314cb04a8dc54ea359a0ba47e688a45024
font_01_sfnt_off00010c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C00 10240 bytes
SHA-256: b2c8d837734d0f69c8b2b3ca6db5c94c6b326e7c9e66dd4d750abc45f59f0bc6

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