Malicious PDF — malware analysis report

Static analysis result for SHA-256 1915811791ac4d7e…

MALICIOUS

PDF

75.1 KB Created: 2021-02-27 08:30:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a6ba71306b825178820efcefeae1fe27 SHA-1: 82bb6f934f8b1fb2d9b64ca25f7b4eba55f6576e SHA-256: 1915811791ac4d7ee82654db7c622a5c77bbeedc6d521af8031e711ae2d35570
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://xajibur.ru/award?keyword=yoga+poses+for+back+pain+while+pregnant PDF link annotation
    • https://lejawoxaniw.weebly.com/uploads/1/3/0/7/130738778/9717353.pdfIn PDF document text
    • http://goossyy.online/962813165751wy48.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/gdiawSt/pegururawozodagig.pdfIn PDF document text
    • https://pedugosiv.weebly.com/uploads/1/3/4/6/134622687/940832.pdfIn PDF document text
    • http://abzac.me/short_moral_stories_in_english_with_writer_nameo4go9.pdfIn PDF document text
    • http://bostpolamos.site/kufojifusoxun9sp.pdfIn PDF document text
    • https://bebabigi.weebly.com/uploads/1/3/5/9/135977904/3640794.pdfIn PDF document text
    • http://eurozone.pro/kirby_g4_vacuum_bags_walmart22j4d.pdfIn PDF document text
    • https://zuvopejibi.weebly.com/uploads/1/3/4/0/134017525/7557021.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/clear_chunky_heel_platform_sandalnwsjr.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/jfjiAvk/strategic_management_process_in_order.pdfIn PDF document text
    • https://cdn.sqhk.co/xajamenujo/jPLgXPP/91295142139.pdfIn PDF document text
    • https://bulasenojagaroj.weebly.com/uploads/1/3/4/3/134357248/6678289.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/dufekifaral/91278380565.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/madden_nfl_19_longshot_guide.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_off0000e9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F3 5536 bytes
SHA-256: 3fa0f9b48a45174643010505d857897dcb2c09d5088037bcfc30fa8e48f520d9
font_01_sfnt_off0000fcd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD9 10208 bytes
SHA-256: ca73f3f925ce7cbe1cbffa3892436d8869d12321bc7af42f5ee3ca2027bcdb6c