Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf363fa4dd7aaaa…

MALICIOUS

PDF

63.2 KB Created: 2021-02-17 11:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 479eed5914f86c5b69dc40c34b2a5bb8 SHA-1: 9cb5743e45694ca5172b00a870f89321cf0919b1 SHA-256: 8bf363fa4dd7aaaa93390bd2e8a4ae800da5fa12d5a755d599e394bf1d76863c
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://baarspo.ru/aws?utm_term=asus+rt-n53+firmware+restoration+utility PDF link annotation
    • http://masajsalonunuz.com/versatile_sew_in_weaveb1s0f.pdfIn PDF document text
    • http://sreview.online/sample_detailed_lesson_plan_in_englishnszdf.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/cgcgfjg/invasion_of_the_body_snatchers_pods.pdfIn PDF document text
    • http://drovazvenigorod.ru/gospel_music_praise_and_worship_songs_2019vc3ix.pdfIn PDF document text
    • https://cdn.sqhk.co/zapajugadira/RgjjWhh/word_family_tree_template.pdfIn PDF document text
    • https://cdn.sqhk.co/xugumewaz/RjajcDL/playstation_app_store_games.pdfIn PDF document text
    • http://stepka2016.xyz/reclamos_inmobiliaria_danacorpeoksi.pdfIn PDF document text
    • http://instapriz.website/shri_ganesh_ji_ki_aarti_song4did4.pdfIn PDF document text
    • https://cdn.sqhk.co/wixadigizal/je6ibPo/66078349216.pdfIn PDF document text
    • https://cdn.sqhk.co/zivugeri/RO44ovn/ghost_guns_arkansas.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/BheiaTc/71296824582.pdfIn PDF document text
    • http://perfectiona.online/budgeting_spreadsheet_for_studentsxk186.pdfIn PDF document text
    • http://car-test.pro/punjabi_movies_list_2019wnlmy.pdfIn PDF document text
    • http://bestgirl69.com/79397173734z685z.pdfIn PDF document text
    • http://enots.space/arachnids_and_insects_dichotomous_key_answerssdczn.pdfIn PDF document text
    • https://cdn.sqhk.co/jomutepe/h5Jm4Np/wd_my_cloud_ex2_ultra_setup_download.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/zunaduxa/zetatukinojamutobow.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/bowflex_pr1000_resistance.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_off0000bc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0B 5416 bytes
SHA-256: 110d13cb2830f6079e4f6798afdd9da6c967e29a4580e3f615fad7365592a7b2
font_01_sfnt_off0000ce84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE84 9664 bytes
SHA-256: eec7476a18c7d84de929296dcea997a190fa17609a23e5a5735563b8d995bd27