Malicious PDF — malware analysis report

Static analysis result for SHA-256 4efffb09b3b602e4…

MALICIOUS

PDF

74.8 KB Created: 2021-02-20 07:57:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 054d6d411501c2d3e87177edaedb2239 SHA-1: c0e1e44ce0e9c8159e942822af20866f221926a8 SHA-256: 4efffb09b3b602e4aaeac1ab49ef3220c2f7f69487a61b0270622e51aca9aa2d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wb?keyword=how%20to%20clean%20a%20coleman%20generator PDF link annotation
    • https://cdn.sqhk.co/munakuvu/hgoibii/58427908816.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/android_app_ui_templates_free80pc0.pdfIn PDF document text
    • http://educationonline.website/72817474916qchc6.pdfIn PDF document text
    • http://astrology-personal.online/what_does_the_moon_in_sagittarius_meanhwlt1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484633/normal_60254a4547610.pdfIn PDF document text
    • http://acupofjacob.com/skyrim_se_deadly_mutilationlho9g.pdfIn PDF document text
    • https://cdn.sqhk.co/latipizi/Njht33A/moto_racing_3d_games_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pibutuvopedu/QshhJgg/diafragma_anticonceptivo_caya.pdfIn PDF document text
    • https://cdn.sqhk.co/samofetob/iyC4Oij/the_chosen_app_amazon_fire_stick.pdfIn PDF document text
    • http://design-kvartira.info/newasabefofanotipu5unjb.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/ijhhc32/gaming_tournament_app_download_free_fire.pdfIn PDF document text
    • https://cdn.sqhk.co/sumefixes/jibYIuV/marshmallow_fondant_wilton.pdfIn PDF document text
    • http://stileidmo.fun/badland_2500_winch_wiring_diagram5g9l1.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/hhhmge3/healow_patient_portal_registration.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/vovopafubipu/vsco_full_pack_2018_gratis.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_off0000e814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE814 4992 bytes
SHA-256: 5f28f31e470fd5f96a58a7aff2830c03a4fd4669390285f6aa7d2742ad78d940
font_01_sfnt_off0000f909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF909 11000 bytes
SHA-256: 0214ea0791ce46db8a7e855d440d1f8f106094d5b79a9731ff58af3ed78e7780