Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f1df728ff006e8…

MALICIOUS

PDF

70.8 KB Created: 2021-02-19 06:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2ffcffc7b202f074979f93b384f042e2 SHA-1: 33664a4252b3211cb3eb62f2c9011693db373531 SHA-256: 54f1df728ff006e8c5b5c54ee9c926e922582f43daf1a2776a7bccd78fedb4a1
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=reviews+on+the+movie+inferno+2016 In PDF document text
    • https://davugunibelerab.weebly.com/uploads/1/3/4/6/134612729/cb0110e1.pdfIn PDF document text
    • https://nudabixe.weebly.com/uploads/1/3/4/5/134505388/sujazasux-werep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387815/normal_60010f159807a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382194/normal_5fc79e97559da.pdfIn PDF document text
    • https://cdn.sqhk.co/pobefozo/9hatSJf/32778924144.pdfIn PDF document text
    • http://topuniversityru.fun/prentice_hall_gold_algebra_2_workbook_answers8dnn4.pdfIn PDF document text
    • http://zoneeuro.pro/vopewoacb3q.pdfIn PDF document text
    • http://hangzhoumetal.ru/what_are_the_differences_between_fungi_bacteria_and_virusesudb9r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449775/normal_601a3fd70418e.pdfIn PDF document text
    • http://erogan24.website/48912091481e73sw.pdfIn PDF document text
    • http://iminn.ru/guardar_fotos_de_whatsapp_en_galeria_androidjhc6i.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/wikivogolevama77mnz.pdfIn PDF document text
    • http://meetsucre.pro/xewinebisirokobujegag7ovr2.pdfIn PDF document text
    • http://options.expert/57370940584pg03w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tekaxipi.epizy.com/82616098224.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_off0000d90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90D 5404 bytes
SHA-256: 2a23197bc47f766c07627fcdb31d692603e92ee807d3f12e7f02ad3e1e8189cc
font_01_sfnt_off0000eb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB67 10216 bytes
SHA-256: 0cd9e81b81056a292fd1c1447033eedf6b729c621a7483d72dac99d5d0d17fd6