Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d8c84c33f2df43a…

MALICIOUS

PDF

71.7 KB Created: 2021-03-03 03:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 217e6810ee7a75118ae195f4ff723c94 SHA-1: b68382ad6fd19c94e2a2b99fc193c9461157af25 SHA-256: 4d8c84c33f2df43a527562f1cbba8bca1f112ef102152b22f7c854f2c8d7edc9
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://resalured.ru/wix?keyword=clase+de+dibujo+a+lapiz PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481052/normal_60361d772a066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_601b3677eb24b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446634/normal_5fd17133c5076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_6028fa36003fc.pdfIn PDF document text
    • https://cdn.sqhk.co/wesuwajil/djf1Mjf/starfall_november_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_600fe52b25fb0.pdfIn PDF document text
    • http://repefokuxogefu.22web.org/88920691804.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fceb4ace1148.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafaveju/jgjfa4Q/tilovadonekaloxakerukukor.pdfIn PDF document text
    • http://vejobazure.22web.org/69705934268.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443341/normal_5ffdd67217b13.pdfIn PDF document text
    • https://cdn.sqhk.co/satasevubu/dioU5ic/vifojubanulubegarizekeso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fifusudevop.rf.gd/57955316.pdfIn PDF document text
    • http://xedoruvuseju.rf.gd/73782192502.pdfIn PDF document text
    • http://sivigowukom.epizy.com/malachite_green_solution_safety_data_sheet.pdfIn PDF document text
    • http://kezadovimitaw.rf.gd/camila_cabello_senorita_music_video.pdfIn PDF document text
    • http://luselobek.epizy.com/blessing_poem_worksheet.pdfIn PDF document text
    • http://kosisat.epizy.com/69062413850.pdfIn PDF document text
    • http://bamasagure.epizy.com/solving_equations_with_distributive_property_medium_answers.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_off0000dd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0F 5028 bytes
SHA-256: 4474f332935afb1b18b1bc2f605790172c3405972320347d8a9dac7012ab0571
font_01_sfnt_off0000ee37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE37 10776 bytes
SHA-256: b4b476e069ee1108d2ac822246ce7d2ec95cfa138c56c3ed4d04590a98c4c1f6