Malicious PDF — malware analysis report

Static analysis result for SHA-256 066ef97ad02917ac…

MALICIOUS

PDF

75.1 KB Created: 2021-03-04 05:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 45e62cd40364ff327648358bedcd895b SHA-1: f860b76217ee39e9d2476ba754b2144ce0fb615d SHA-256: 066ef97ad02917ac6843768463791f6a336179119ffbc3b9a8becd8fdea11f0c
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://seumenha.ru/wb?keyword=pharmacy%20dosage%20calculations%20practice%20pdf PDF link annotation
    • https://cdn.sqhk.co/furugilenu/Jjfif6q/best_55_tv_2020_under_1000.pdfIn PDF document text
    • https://kufaxalerix.weebly.com/uploads/1/3/1/4/131453821/tirogefawepe.pdfIn PDF document text
    • http://ellmax-site.xyz/prominent_d1c_chlorine_analyzer_manualj5lmz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453888/normal_5fcceefc9a1fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_602e45d30bfec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376600/normal_5fdea945de9df.pdfIn PDF document text
    • https://cdn.sqhk.co/gasubapo/mbicqjj/12537310004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413469/normal_600bd3d7edc8d.pdfIn PDF document text
    • https://ramujodavuratot.weebly.com/uploads/1/3/4/6/134667495/medaxokej.pdfIn PDF document text
    • https://wemafijape.weebly.com/uploads/1/3/4/7/134775870/rubewamirelusogam.pdfIn PDF document text
    • https://litiwufedoza.weebly.com/uploads/1/3/0/7/130739575/242303.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/jeduj.pdfIn PDF document text
    • http://profmaster74.ru/5018557102vw426.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485322/normal_5ff682b658832.pdfIn PDF document text
    • https://viledilexemapol.weebly.com/uploads/1/3/4/6/134698440/1381465.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_off0000e6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BE 5672 bytes
SHA-256: 57e0d0cc8b51313803f9e5615ba8123187304f2db3ae6cdb4c140833a627d6ba
font_01_sfnt_off0000f9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EF 11076 bytes
SHA-256: fc10b6b08033a2e9af931b2a0f2764ec9b291520bd34da2dcdaa0ce515e567e4