Malicious PDF — malware analysis report

Static analysis result for SHA-256 218e43796aac71aa…

MALICIOUS

PDF

71.5 KB Created: 2021-02-07 12:15:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37eac243b09048ca4c596676c7a5db58 SHA-1: fb5471f6874d371d06bf7302427585ef5c7ae491 SHA-256: 218e43796aac71aa395e7846ae6731e3ab4461e38f7c5a40b1d4644db139c9c0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=school+annual+day+invitation+format PDF link annotation
    • http://fruktovik.com/call_of_the_wild_webquestotl5z.pdfIn PDF document text
    • http://wbigs.space/986800082838y0o4.pdfIn PDF document text
    • http://about-fb-support.com/xogopowefiporatesutapen5h9db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455197/normal_5ff85fb784b3b.pdfIn PDF document text
    • http://goloturasituj.66ghz.com/24389639498.pdfIn PDF document text
    • https://cdn.sqhk.co/divabasom/hbVhjhi/50124942088.pdfIn PDF document text
    • http://sq11mini.com/import_chrome_bookmarks_into_brave_android1qpor.pdfIn PDF document text
    • http://rodsfish.club/sequence_diagram_examplesjxnpd.pdfIn PDF document text
    • http://takipleskazan.org/hail_the_king_espaolep4sh.pdfIn PDF document text
    • http://storeeu.info/balungan_kere_86xc5wz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420459/normal_601ec840eb11c.pdfIn PDF document text
    • http://zhigina.ru/cities_skylines_best_vanilla_mapnzfv9.pdfIn PDF document text
    • http://bigonetudukori.iblogger.org/employee_onboarding_ppt_template.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/94619295491x9vvm.pdfIn PDF document text
    • http://serikanipesemo.iblogger.org/9798272490.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375504/normal_6002c9e4a6a93.pdfIn PDF document text
    • http://topshops.website/37453244154c6act.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/Vigie7a/97956004508.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_off0000db14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB14 5348 bytes
SHA-256: 5b4abab097832951fd1b2b1adc2e506ff473f06f0ea612540cbb9b733a5e1347
font_01_sfnt_off0000ed31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED31 10736 bytes
SHA-256: 04b9f043c1be8d0314703a4abcc80edc0d633f9d3033521c1c08474d2b614f2e