Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec679d376432532…

MALICIOUS

PDF

71.9 KB Created: 2021-02-18 21:02:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fcfaf4216b87a7ee3d915d550c13e549 SHA-1: d9de233ee4927e92c4b3b2fb61b1237792f26ec9 SHA-256: 5ec679d376432532d9a431a7cc0f1246d302f4f43d0cd6829991ade5fa8c28a8
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://jacksth.ru/aws?utm_term=canon+mp250+printer+ink+cartridges PDF link annotation
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/7a4a20eb1157c.pdfIn PDF document text
    • https://zixozuji.weebly.com/uploads/1/3/1/4/131454221/napukasanukikol.pdfIn PDF document text
    • http://comp-arenda.site/zombie_street_fighter_games7yk2h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5ffe77a3bc38b.pdfIn PDF document text
    • http://gtmedis.com/may_produce_java._lang._nullpointerexception_android_studiolz4vw.pdfIn PDF document text
    • https://lubikumak.weebly.com/uploads/1/3/1/4/131453733/33129f3df.pdfIn PDF document text
    • https://vulodimov.weebly.com/uploads/1/3/4/8/134880101/navoziv_giwotupepo.pdfIn PDF document text
    • https://xukotonaxi.weebly.com/uploads/1/3/1/4/131453431/7683695.pdfIn PDF document text
    • https://patinijogu.weebly.com/uploads/1/3/4/8/134854147/zulobagiji.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/zemunomipazikez/convert_excel_sheet_to_macro.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/remexexujemezipexevad.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/widitekolumarafufigimoda.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/example_of_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/5667817394.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/cisco_vpn_client_mac_os.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_off0000db0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0A 5728 bytes
SHA-256: 293e458c61ba20912cf2041be33a6cf95617ddc2292b3e925eb2a869befd902d
font_01_sfnt_off0000ee7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7C 10652 bytes
SHA-256: 31f85c2ff96727179e485781fae5f43a9d60398173f61ec1c01e2f409e4232d4