Malicious PDF — malware analysis report

Static analysis result for SHA-256 639492244251d191…

MALICIOUS

PDF

73.5 KB Created: 2021-01-28 02:21:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ddbf29b2eac2959ea8fa727cc9ca573 SHA-1: 3da6460b765b5357b74251d11d0e189ece409649 SHA-256: 639492244251d19194eec2731fb922dc63bbc18170142afd24ce66bf4830ab6e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wb?keyword=free%20online%20hidden%20object%20games%20unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459318/normal_5fcfa29399611.pdfIn PDF document text
    • http://xelirap.22web.org/athome_camera_home_security_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411501/normal_5ffefa4b88e59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5fe99a2a50d1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472764/normal_5fd3b4d61767f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_600ccbfa02e95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413238/normal_5fecc25d04f27.pdfIn PDF document text
    • http://nobirejajatit.iblogger.org/mera_bhola_bhandari_ringtone_karen.pdfIn PDF document text
    • http://juzajikadig.22web.org/fululuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378621/normal_5ff23ffa21a2d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxadib.epizy.com/22103676985.pdfIn PDF document text
    • http://besipopi.epizy.com/honors_chemistry_significant_figures_worksheet_answers.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/canadian_passport_renewal_express_form.pdfIn PDF document text
    • http://vivimaga.epizy.com/javascript_dom_cheat_sheet.pdfIn PDF document text
    • http://diwuzenebixo.epizy.com/aaa_logo_2010.pdfIn PDF document text
    • http://getetir.epizy.com/shiv_aradhana_video_songs.pdfIn PDF document text
    • http://radujexoxetapil.epizy.com/twitter_header_template_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/vatizumapuje.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_off0000e3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B7 5588 bytes
SHA-256: b258fbf8e063eb5f46d7285dc88a3d54ce24e72b032addc1203655b7c664bb4d
font_01_sfnt_off0000f68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68E 10016 bytes
SHA-256: 8a2f39baa1cc98b5ef381051e521a526d84afe8a1a03113e58428bd75058d2b6