Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac3954a36a83ef94…

MALICIOUS

PDF

78.4 KB Created: 2021-04-06 00:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d79d03174f5433b604afef60b890f061 SHA-1: 70f6a7720c927f259f0928a7bee235fa67b1fa48 SHA-256: ac3954a36a83ef940de8d16bc300f7aaca775ab521b4b0e7cb33fbdf26f15b2f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://dugedepap.ru/123?utm_term=dragon%2527+s+dogma+assassin+gear+guide
    • http://creampiepow.club/vuwebifuvalodajydlv5.pdf
    • http://topplafond.xyz/343183581167tytt.pdf
    • https://cdn.sqhk.co/gesokusa/fijKif4/71342198198.pdf
    • http://dapajurop.mygamesonline.org/calendario_2020_para_imprimir_completo.pdf
    • https://cdn.sqhk.co/koditisalupe/fghzgi3/word_cookies_strawberry_19_cheats.pdf
    • https://cdn.sqhk.co/tuwesedujila/swD9geH/94781457955.pdf
    • https://cdn-cms.f-static.net/uploads/4377905/normal_6056666b25a35.pdf
    • https://static.s123-cdn-static.com/uploads/4449014/normal_5fe25f049b956.pdf
    • https://static.s123-cdn-static.com/uploads/4373509/normal_5fcc0c5ac3aa7.pdf
    • https://cdn-cms.f-static.net/uploads/4459787/normal_602790798a527.pdf
    • http://xoxosedefoxadu.mygamesonline.org/domain_and_range_worksheet_with_answers.pdf
    • https://static.s123-cdn-static.com/uploads/4387241/normal_5fee86b8be227.pdf
    • https://static.s123-cdn-static.com/uploads/4467564/normal_600646fe119af.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rakabexozu/what_was_the_very_first_rap_song.pdf
    • http://jowosos.myartsonline.com/diagrama_bimanual_con_therbligs.pdf
    • https://s3.amazonaws.com/wanalovum/softonic_google_chrome_free.pdf
    • https://s3.amazonaws.com/jadudusujuje/15166843412.pdf
    • http://pupagerirawax.myartsonline.com/71928771786.pdf
    • http://pelebirepopo.onlinewebshop.net/52505869960.pdf
    • https://s3.amazonaws.com/foneniz/how_many_gb_will_cyberpunk_2077_be.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f688.bin
b5e5a4eaf187fe2a04af3b2b238f6df40ac59a333f6eb2734f965f4f06e0ef19
pdf-font-stream PDF embedded font (sfnt) at offset 0xF688 5144 bytes
font_01_sfnt_off000107fa.bin
3e59ccfd8382741c0080d28f8afb5512a2a959cd7e14c9cfa63d6314101c8d8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x107FA 10704 bytes