Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6bf3fbb4c0d0211…

MALICIOUS

PDF

72.3 KB Created: 2021-02-16 09:11:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ade5e967d8998e2dd9c95182a02b3786 SHA-1: bcf19a2b022fd6e0c2abc79ad44e18b4bdaf0a74 SHA-256: c6bf3fbb4c0d0211cb24832a8658c0ef8ad5f112564a5697161f8d4c964896fa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wb?keyword=siemens%20s5%20plc%20manual%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425768/normal_5fd0d79056d49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419441/normal_5fe52764bdce0.pdfIn PDF document text
    • https://cdn.sqhk.co/dosovejozeb/cjdjgib/mebogomefebedonowakabega.pdfIn PDF document text
    • http://gemobaraza.iblogger.org/oxford_discover_4_answer_key.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382638/normal_5fe5e436c510e.pdfIn PDF document text
    • http://igclienteam.com/ogata_system_dynamics_4th_edition_solution_manual7ayvh.pdfIn PDF document text
    • http://govazibibili.22web.org/76567277215.pdfIn PDF document text
    • https://cdn.sqhk.co/wokiwife/fhgjhjh/stack_surfboards_on_roof_rack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_60192e5469d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498842/normal_6010a9902b2e6.pdfIn PDF document text
    • http://fitnesspack.net/77364913211rzpq.pdfIn PDF document text
    • http://loberas.22web.org/44225775689.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/kalanejaxutilif/b._h._m._s_application_form_2018.pdfIn PDF document text
    • http://xuneviwek.epizy.com/30387924034.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/kaleidoscope_world_lyrics.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_off0000dd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5E 5432 bytes
SHA-256: 98b07d9b68c97dd13ccef19cd7c383d537f3c5af67cb18e508ff9d3063283a6c
font_01_sfnt_off0000efd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD0 10812 bytes
SHA-256: 5551bd9af3183a7c88c2543c1da347e1539ce63f2f2b530190249f55b28e7443