Malicious PDF — malware analysis report

Static analysis result for SHA-256 826711237f025888…

MALICIOUS

PDF

74.2 KB Created: 2021-02-26 18:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d142fff01871af8e4e3b95c971aa442c SHA-1: 565792f8602dcbb1385f2656adfbc10c9ca661eb SHA-256: 826711237f025888515343f26d788041ed685f40b1a9457de99508726289306a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://midufefew.ru/award?keyword=manual+radios+midland+gxt1000+en+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408195/normal_6025ed5f49c6d.pdfIn PDF document text
    • https://cdn.sqhk.co/wegodimumod/gseicjv/vorulajuwaju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_6025ea80f3de3.pdfIn PDF document text
    • https://cdn.sqhk.co/lexuxeza/bihjvOg/vavidevuf.pdfIn PDF document text
    • http://logefekur.22web.org/rawutonibaz.pdfIn PDF document text
    • https://cdn.sqhk.co/zewapoxi/V1hbJls/influence_the_psychology_of_persuasion_revised_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/gjUYjgc/tiwinade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504922/normal_5fc8159828cdf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ropuba/belufifavigotilanajekotez.pdfIn PDF document text
    • http://vesebebiwimana.epizy.com/assassin_s_creed_2_binkw32_dll_file.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/angle_bisector_geometry_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/fepajakovelavudaladep.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/minecraft_skin_template_steve.pdfIn PDF document text
    • http://naxezutozotos.rf.gd/run_android_sdk_manager_linux.pdfIn PDF document text
    • http://vamudijikepefos.rf.gd/lufavori.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_off0000e2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D7 5760 bytes
SHA-256: c94f96064ce8d4d194bc74ed61b68f5de12d30c8eb68f433817061af0633a52e
font_01_sfnt_off0000f62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62B 10348 bytes
SHA-256: 2fa87ce7ec5d744316cd8cc1f055c1419a2b9ff8c91642b64c8ae9cdb5f8188a