Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8013fcfb89aa813…

MALICIOUS

PDF

76.1 KB Created: 2021-01-26 03:14:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6c09923cc68136074d76cf122c6663c5 SHA-1: bbcb54368a452a05570d67cdb709a6462ac0b79b SHA-256: f8013fcfb89aa813f5ceb486a5bea1df59fb76a48b770df24b841121a155f90f
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://jottigo.ru/wb?keyword=ton%20t?%20binh%20phap%20va%2036%20k?%20ebook PDF link annotation
    • http://bulewedulipofam.iblogger.org/bar_graph_examples_with_questions_and_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389582/normal_5ff298e763a48.pdfIn PDF document text
    • http://tipopajokoti.iblogger.org/mugodubewukuxituroleg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476938/normal_600c97c3aa3b3.pdfIn PDF document text
    • http://naropiwazufilu.22web.org/leonard_cohen_hallelujah_sheet_music_free.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/acog_guidelines_severe_preeclampsia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_5fc93fb47c656.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/leluw_fibadepoli_semuwojizedep.pdfIn PDF document text
    • http://logowiwubapokar.iblogger.org/new_tan_application_form_49b.pdfIn PDF document text
    • https://vusozegaxu.weebly.com/uploads/1/3/0/8/130874635/nasigoruruditipirijo.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/bezegoluzose/95788583852.pdfIn PDF document text
    • http://lupewozer.rf.gd/tango_charlie_movie_songs_free.pdfIn PDF document text
    • http://bavidatesudujig.epizy.com/86827722831.pdfIn PDF document text
    • http://lelupiborojez.epizy.com/wurubulimorovuzixodave.pdfIn PDF document text
    • http://fexewagesulel.epizy.com/57882345165.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_off0000deec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEC 5272 bytes
SHA-256: 46bd774df3d44e1f7abf36e38b543d677abe906592ef536a161166626a182a55
font_01_sfnt_off0000f0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D8 22796 bytes
SHA-256: 70b2a73cc913368eb7809ab62140225b63a20931a23b3efdc4ae70dbe3573ccc