Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41a9e2ccaad5edb…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 09:02:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 99772832c1363bd3b0bacea2049ba420 SHA-1: 8ec45a1f5810904cf361767731f6811612604065 SHA-256: e41a9e2ccaad5edbcf9ccf6df2382a97ada92fe5f00c8154d09c539ece37197a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=que+puede+causar+dolor+en+la+ingle+mujer In PDF document text
    • http://devlp.design/ketoacidosis_treatment_guidelines8f094.pdfIn PDF document text
    • http://kukushpa.fun/add_canvas_to_imageview_androiddp5x4.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/bghiNje/tinkle_meaning_in_kannada.pdfIn PDF document text
    • http://mailedflkf.site/cercle_de_la_forme_tolbiac_avisl6u29.pdfIn PDF document text
    • http://erogan-oficial.site/mavexejatopevkz6zv.pdfIn PDF document text
    • http://finipupote.mywebcommunity.org/it_help_desk_manager_interview_questions_and_answers.pdfIn PDF document text
    • http://4escam-bot.online/bipalntj42.pdfIn PDF document text
    • http://mmmmmme.space/tambourine_man_lyrics_bob_dylanq4y8m.pdfIn PDF document text
    • https://cdn.sqhk.co/zolilobup/gcbjcV9/walmart_hair_salon_near_me_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/iiDgiRs/garupomibimukomibelupumux.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/jhdTTNn/addons_for_minecraft_pe_download.pdfIn PDF document text
    • http://naturwow.space/tatojodotakegowasog4la1o.pdfIn PDF document text
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/degoruzafexuze-fadot-kigisin-kevujiloxi.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/what_is_health_and_rehabilitation_sciences.pdfIn PDF document text
    • https://degewobajobazim.weebly.com/uploads/1/3/5/3/135324790/6698944.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_off0000deba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBA 5532 bytes
SHA-256: 01b4c772800d02ebffe40d8b8470ffc93642f0ac888501e7eb905bd91a87b0bf
font_01_sfnt_off0000f172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF172 11160 bytes
SHA-256: 23476139318d5d410201dcdfaf62dcf054c24877a1e4bdaa19198ea2c9ffc96b