Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8450683b07c35bc…

MALICIOUS

PDF

70.1 KB Created: 2021-02-21 07:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f53c02f6e98d262b70d861d8df12c980 SHA-1: 9ada072f8c7387347422754d1687527a53014fca SHA-256: c8450683b07c35bc9ba199b129146efbefc5bb788c373b710102e6d8149e34bb
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://jacksth.ru/wix?keyword=principal%2527s+office+meme PDF link annotation
    • https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/jarisewapofifur.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/jenetulerida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417423/normal_602796c0eafc2.pdfIn PDF document text
    • http://prodson.fun/sefulabefobosimunafatedo46.pdfIn PDF document text
    • http://womans30planet.com/740770517680gz2w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366369/normal_5fe5a119c51a6.pdfIn PDF document text
    • http://goodnaturak.space/tabela_de_conjunesdqpak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_600be0e2d6984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409396/normal_602af95345a50.pdfIn PDF document text
    • https://lososegumupabi.weebly.com/uploads/1/3/1/4/131407698/6bd9706a.pdfIn PDF document text
    • http://pribor-poverka.site/99499884820fm11u.pdfIn PDF document text
    • http://titanof-filtr.ru/como_atualizar_o_android_tv_philcouxw0w.pdfIn PDF document text
    • http://micrometer25bill.site/jukabaturomebalobulifupefrrgp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lozepis.epizy.com/saveribixinoninopisusom.pdfIn PDF document text
    • http://beverotunege.epizy.com/what_is_mission_planning_in_military.pdfIn PDF document text
    • http://wufofot.rf.gd/83561958474.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC982 4904 bytes
SHA-256: b477b4510ad163b8f90d8174e928187f3a8e31aa7a03d092d29a2d6b3ac351a0
font_01_sfnt_off0000d9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FE 10536 bytes
SHA-256: 81604a57037ce4714d3b9ff680550c57ac1678b5406fa0382f68187b23670e78
font_02_sfnt_off0000fd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333