Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c8b492e4a42c9c7…

MALICIOUS

PDF

72.9 KB Created: 2021-02-19 21:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8bfa6ac157ab1a214f5e55b835784276 SHA-1: 51f5a116431c3e2f9eb8e688f54bcf2b1cdb8a6a SHA-256: 5c8b492e4a42c9c7e27a9eb724732bd21d3871eebc97005a95b76685fd89f81d
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://druttle.ru/wix?keyword=batteries+pogil+answers+pdf PDF link annotation
    • http://acgmgroup.ru/vuxitabezapalp8ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409604/normal_602b392108f6e.pdfIn PDF document text
    • https://cdn.sqhk.co/lasotepana/C4mr7hd/real_racing_3_wiki_cars.pdfIn PDF document text
    • http://igonlinesupport.com/mutton_biryani_in_tamil_videoe2bah.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409826/normal_5ffd59ef5fc39.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/hjgd9di/amazon_marketplace_canada_phone_number_customer_service.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/icgijd8/16976103965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5fe97303ee71d.pdfIn PDF document text
    • http://changely.club/fuvotomugerokutesipjss4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_601a53f6585a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489976/normal_600e53f0aad39.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/ja2qghh/robedatezabirixufotodof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414335/normal_6001f4de8d039.pdfIn PDF document text
    • http://bipiraxas.iblogger.org/aprendizagem_baseada_em_projetos_bender.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366000/normal_5ffb5d8bd9aff.pdfIn PDF document text
    • https://cdn.sqhk.co/rubupidorinu/hFiiQgj/vector_addition_calculator_wolfram.pdfIn PDF document text
    • http://idealicaufficiale.website/poxezjxs9i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuzinibijabu.rf.gd/robot_vacuum_cleaner_price_singapore.pdfIn PDF document text
    • http://zuriromaruwo.epizy.com/scratch_2_for_ipad.pdfIn PDF document text
    • http://debalipusafuj.epizy.com/xudakowajuzeximokilogutat.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_off0000e0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AD 5348 bytes
SHA-256: 99106764b23019195113314bec8f1ce573a966ce441ae4ab330a08d09e476343
font_01_sfnt_off0000f2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FF 10516 bytes
SHA-256: 95fd089c60542c58dcee15ad6d8773b7e34f640cc21bb8afc8d729aba4f2ff43