Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a554e91ff21e9d…

MALICIOUS

PDF

60.9 KB Created: 2021-02-17 17:42:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3ce05bcc04d7303bd6524be683bb605b SHA-1: 6fef241e699cbf3d582a8b96b699027d306ed2e3 SHA-256: 58a554e91ff21e9d19e4dd4a51c8a2c7980c03a0919a9e417c9070099a272936
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://jacksth.ru/wb?keyword=heat%20n%20glo%20fireplace%20service PDF link annotation
    • http://axecheat7.xyz/facebook_banner_size_template_2018bv7ei.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413002/normal_5fde844d7e547.pdfIn PDF document text
    • http://onlinetyz.xyz/safivomalimikaxejemqkm9f.pdfIn PDF document text
    • http://snegny.com/new_york_dmv_learners_permit_test47mhz.pdfIn PDF document text
    • https://roboxojepuz.weebly.com/uploads/1/3/4/2/134235986/3877352.pdfIn PDF document text
    • https://zekufizow.weebly.com/uploads/1/3/0/7/130775694/mopirilofadifug.pdfIn PDF document text
    • https://wigikeketiru.weebly.com/uploads/1/3/1/4/131406435/zudebelaxinufek.pdfIn PDF document text
    • https://zuzesewijolane.weebly.com/uploads/1/3/1/4/131406438/mikipoxunawege-kefudajizuzetam-xonatijubado-rajibidas.pdfIn PDF document text
    • http://dkblogin-de.best/fogibisenufudisesowuft3pfd.pdfIn PDF document text
    • http://idealica-italiaofficial.site/canadian_auto_id_cardoloyd.pdfIn PDF document text
    • http://detonic-ufficiale.website/a_b_c_song_videovp338.pdfIn PDF document text
    • http://alfa-quest.ru/nchsaa_cross_country_uniform_rulesnlduh.pdfIn PDF document text
    • https://xopezafetuwov.weebly.com/uploads/1/3/5/3/135314897/7405883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_600cb01f3ca26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jamurujitexezi.epizy.com/pgl3_firefly_luciferase_reporter_vector.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_off0000b4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B0 5204 bytes
SHA-256: 1a88c03910ac9af9c8652b308a4d152e4d8de9f32f3378660a5e37348ae1d028
font_01_sfnt_off0000c681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC681 9468 bytes
SHA-256: a3643db0c08da5b54d953f03a02f5109a606916c5a85bc060b127c5ff64372cb