Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c62519caf8ee4e…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 19:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a11492c95b374266088403559c4f5030 SHA-1: 8c2a4763abe4b0f6a98284410cfc2673d350429a SHA-256: 12c62519caf8ee4edb094aa5852b072819aff4cb2a03e1980491f036e151d975
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/aws?utm_term=what+foods+are+complex+carbs+found+in PDF link annotation
    • https://pibowalemarume.weebly.com/uploads/1/3/1/1/131164440/885558bd.pdfIn PDF document text
    • http://mabay.fun/69908119108e11ix.pdfIn PDF document text
    • http://vittorguxx.site/crash_bandicoot_2_pc_full_game0gyfl.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/xagemuvoginovugekige.pdfIn PDF document text
    • https://sawuwirepugasup.weebly.com/uploads/1/3/0/9/130969548/nezaj-dileloxupi-ragizepujipak.pdfIn PDF document text
    • http://pusolaxunu.66ghz.com/kindle_4_file_formats.pdfIn PDF document text
    • http://maddot.space/327562495211imhm.pdfIn PDF document text
    • https://maverutorolo.weebly.com/uploads/1/3/5/3/135393183/wunebuk-gewukunojuno.pdfIn PDF document text
    • https://vazewelekataba.weebly.com/uploads/1/3/1/6/131606588/dezufi.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/5Wgjyha/tonikiganafekisoxaw.pdfIn PDF document text
    • http://qunit.space/four_temperaments_personality_testvxmbv.pdfIn PDF document text
    • http://complerbnp.com/214019089724ep3f.pdfIn PDF document text
    • http://all-gopro.com/tojejonevzos54.pdfIn PDF document text
    • https://moxigowa.weebly.com/uploads/1/3/0/8/130814106/1975711.pdfIn PDF document text
    • http://jepewadagamer.scienceontheweb.net/jugejazenufew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4D 5616 bytes
SHA-256: 31542404c02f34a941fc48223de3315595b9da62501c35e864a5577fa654424b
font_01_sfnt_off0000f249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF249 10076 bytes
SHA-256: f22ab19397dc69e3b0f02427acd5e067c1a9da2b68e1d9977e511047b077cb34