Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b43c2ad620786ab…

MALICIOUS

PDF

79.7 KB Created: 2021-02-06 12:53:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 33f142d4fee7537d7c57aa088e85179d SHA-1: 557c47db0ebe8ca05ced12dfc2e7c8a8dda9eaf4 SHA-256: 2b43c2ad620786ab1f474c8d77346f24fb6befaab24f2b41c12513d30f5228d4
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://yafferge.ru/wb?keyword=mission%20mangal%20online%20platform In PDF document text
    • http://nazhivy.net/you_are_my_sunshine_sheet_music_ukulele2ckqu.pdfIn PDF document text
    • https://cdn.sqhk.co/tapuvimixaxo/9eLjhji/66817551403.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/RqibheC/rexall_london_post_office_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/xivorotil/ftdjihh/crossfire_wallpaper_1280x1024.pdfIn PDF document text
    • http://mestorating.ru/796201790454nyr9.pdfIn PDF document text
    • https://cdn.sqhk.co/zudatona/ihhbFhg/wifilaropuvobivejuxibad.pdfIn PDF document text
    • http://uaregroup.com/book_destinies_of_the_soul1gvbi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372967/normal_6005ea37ad80a.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/eidyhg8/pen_pineapple_apple_pen_guy_new_song.pdfIn PDF document text
    • http://tamakar.tech/79933371200t16ly.pdfIn PDF document text
    • http://fc-aromat.ru/5672089979690xsj.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/dudurat/95506056619.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/sakabajidezug.pdfIn PDF document text
    • http://toxabose.epizy.com/rar_password_recovery.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/fazepadovadababewap.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_off0000f7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AF 5228 bytes
SHA-256: d61b2e7228a92a464d2cfb7ca33871ca0419fb7d2942167af5d47fc3f8a36889
font_01_sfnt_off0001096f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096F 12536 bytes
SHA-256: 8de69e880e03684c9ab4057f856a8fca49e560a24b31e7beddb8a8ab9921c786