Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9e0e7e31181a63…

MALICIOUS

PDF

67.4 KB Created: 2021-02-14 02:46:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ee1efceac8c76ef68ef4e92b146ce170 SHA-1: a0875e695ffb4a135c7f853783e004ea85372fd9 SHA-256: 3b9e0e7e31181a6343c361a356f3393fd210bf369762168f1cbe520856f96924
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://seumenha.ru/wix?keyword=briggs+and+stratton+repair+manual PDF link annotation
    • http://tronreserve.online/numeros_en_nahuatl_del_1_al_1000cucxh.pdfIn PDF document text
    • http://inmyshtangen.xyz/business_manager_job_description_non_profit51nbr.pdfIn PDF document text
    • https://cdn.sqhk.co/diridenafa/Bihific/98583647609.pdfIn PDF document text
    • http://kolomata.ru/nepiwikirakoloxutun683qb.pdfIn PDF document text
    • http://katermore.ru/pocket_rogues_ultimate_apk_freepj3pc.pdfIn PDF document text
    • https://cdn.sqhk.co/ramazunor/1hdjcii/melewekojosojelodo.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/hSlzhiK/gorillas_in_the_wild_documentary.pdfIn PDF document text
    • https://cdn.sqhk.co/nexoratuxi/CibhcZI/sekunininupowalu.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/hjmjeNF/disneyland_hotel_paris_booking.pdfIn PDF document text
    • https://cdn.sqhk.co/vikafaselida/dZghrnz/specific_pathogen_free_meaning_in_telugu.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/iihihhb/auto_reply_in_gmail_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/hgLAtn7/parachute_80s_arcade_games_list.pdfIn PDF document text
    • https://kitejunozog.weebly.com/uploads/1/3/4/3/134319277/kowalebekoxarok_boterutidup.pdfIn PDF document text
    • http://blablablacar.online/721383052614r098.pdfIn PDF document text
    • https://cdn.sqhk.co/judigirowe/i3mksW4/napusejevinajizoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/jhh7mvx/gravity_bong_socket_size.pdfIn PDF document text
    • http://ig-objectionform.com/best_bengali_movie_site_namesv1dd.pdfIn PDF document text
    • https://cdn.sqhk.co/fovudadeweto/hjaghia/kixavinetebatulufolorud.pdfIn PDF document text
    • https://mugejonisisekof.weebly.com/uploads/1/3/1/4/131437633/tarerukiwuwupel.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/vgdido8/xokaloxudakulakisij.pdfIn PDF document text
    • http://mmuuue.space/faradufifupapenutapagudbf.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_off0000cce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE3 5328 bytes
SHA-256: 8320b002ff4fac647eb667c418202fa93db3d2e8b8fb44808df27c6e1284d5c3
font_01_sfnt_off0000deec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEC 9752 bytes
SHA-256: c944fcffdad70a6821addfe5b256e3fc993943adb50fd986bd933cf89e5ee9ef

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