Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c69cd57cdc894de…

MALICIOUS

PDF

85.4 KB Created: 2021-02-22 19:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b5056b1269e09703263d516f888ed532 SHA-1: 17859fb08d96a6fd921e40543dad6666feab9b49 SHA-256: 8c69cd57cdc894de65ae5563f4ab3ad93d3c5d77297bebe5bd698154b87b0a9a
186 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/123?utm_term=what+ammo+does+ruger+recommend+for+sr22 PDF link annotation
    • https://fepexugoroba.weebly.com/uploads/1/3/4/4/134469665/jatijawesamij.pdfIn PDF document text
    • https://jitebemaduk.weebly.com/uploads/1/3/4/6/134692965/79e77f20592d4ab.pdfIn PDF document text
    • https://cdn.sqhk.co/kifukuvitog/LZEjhgd/big_bang_theory_cast_members_pictures.pdfIn PDF document text
    • http://istra-backwater.ru/nibanemoxabuwuzupegs80cy.pdfIn PDF document text
    • https://vonewujin.weebly.com/uploads/1/3/1/3/131380349/nedubosolesovugef.pdfIn PDF document text
    • https://pabarubuvu.weebly.com/uploads/1/3/1/3/131379718/f5152e4d5cc1919.pdfIn PDF document text
    • https://wididalinur.weebly.com/uploads/1/3/3/9/133986726/papamevu_kijopapub_dixigofop.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/jhcegeg/72401649627.pdfIn PDF document text
    • http://luminar2-download.xyz/274001088288i6fs.pdfIn PDF document text
    • https://cdn.sqhk.co/nuditufu/Tge48ih/kifunupepabakedareba.pdfIn PDF document text
    • https://belukuxar.weebly.com/uploads/1/3/5/3/135312366/gatofu_batan_bapejuzupudiziw_duxepit.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/04FY8Y3/xopota.pdfIn PDF document text
    • https://cdn.sqhk.co/kawaniroti/xhjLqje/nedojiwifamezegube.pdfIn PDF document text
    • https://cdn.sqhk.co/givifevulo/hTNgeii/disney_heroes_battle_mode_mod_apk_latest_version.pdfIn PDF document text
    • https://kiwiwutirove.weebly.com/uploads/1/3/4/7/134707888/7774699.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10322 5548 bytes
SHA-256: cd7c7021258d92ee095e24c9cdf98f220fbcb697cf47097954ed5bcb119a558b
font_01_sfnt_off000115e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E5 15584 bytes
SHA-256: 31f23bd7ebc6e0ea5b1c43ef5039e3d3777f269ea22b764a7ce729921e2f4b68