Malicious PDF — malware analysis report

Static analysis result for SHA-256 75fedcdc6b377787…

MALICIOUS

PDF

72.2 KB Created: 2021-02-07 11:37:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d42d8d2bbc9787523c79941abaf0a203 SHA-1: 65e709ae90ea640dd99ffcd27ac6348c62eaf84d SHA-256: 75fedcdc6b37778736435877b431d5138603d202ad235894397e587c45584b86
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/aws?utm_term=brown+bear+brown+bear+colouring+sheets PDF link annotation
    • https://jigotofobab.weebly.com/uploads/1/3/5/3/135300724/nitaj_budewepupefab_popipa_funizifufis.pdfIn PDF document text
    • https://loboweron.weebly.com/uploads/1/3/2/6/132681880/4877772.pdfIn PDF document text
    • https://dopakegufa.weebly.com/uploads/1/3/1/3/131384718/d07995789.pdfIn PDF document text
    • https://kukevukoleguko.weebly.com/uploads/1/3/4/2/134265740/9586988.pdfIn PDF document text
    • https://jumuvive.weebly.com/uploads/1/3/0/7/130776409/603d63999e.pdfIn PDF document text
    • https://xewidepomizexas.weebly.com/uploads/1/3/0/7/130775014/fobadumiza-rilotopokos-ratam-tawefejerakaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_5ff7bc4058e6e.pdfIn PDF document text
    • https://voresefum.weebly.com/uploads/1/3/0/8/130813922/lawaxixavinize-lonozube-nabigo-kezanudulefene.pdfIn PDF document text
    • http://vknart.xyz/19873304401rpbfl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jobifizokugo.rf.gd/cgp_gcse_physics_workbook_answers_aqa.pdfIn PDF document text
    • http://lizolubemerawi.epizy.com/takubofuzeguso.pdfIn PDF document text
    • http://fereralud.epizy.com/goxuvizadulapisepofapem.pdfIn PDF document text
    • http://jivugojazop.epizy.com/stipulation_of_facts_template.pdfIn PDF document text
    • http://judejelalub.rf.gd/vamudelafamegoduw.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/adobe_audition_1._5_free_windows_xp.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_off0000dd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD43 5340 bytes
SHA-256: e9ff950c0fc74699811540b436831d5297fddeb64cdc859b50945d25a0f862ca
font_01_sfnt_off0000ef7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7E 10764 bytes
SHA-256: cc5cb6d897b0e33c49a8d7ea878474122fdb591884a2a92b6b8c0c3b9d4f6f1d