Malicious PDF — malware analysis report

Static analysis result for SHA-256 75554eb277504747…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 06:45:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4eb0033ba32c701330409ce81f28ae8a SHA-1: bbaa23200fb7be44e9a4865f41e8c6c40e58ae13 SHA-256: 75554eb277504747fcd9b2beef52b29f924db4d00a3c0e29313ba21ef075f792
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wb?keyword=situational%20interview%20questions%20for%20managers%20and%20answers PDF link annotation
    • https://cdn.sqhk.co/tizesefetus/Pqoihfe/free_nuclear_war_simulation_game.pdfIn PDF document text
    • https://cdn.sqhk.co/vozofugova/eLjhhc7/project_drag_racing_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454821/normal_5fff5ab824fc4.pdfIn PDF document text
    • https://riganekonima.weebly.com/uploads/1/3/0/8/130874133/8124905.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/dibobavevezilim2z482.pdfIn PDF document text
    • https://cdn.sqhk.co/xomakonezema/heHndwZ/chicken_goat_cheese_asparagus.pdfIn PDF document text
    • http://bukejasinopa.22web.org/sufivudumipugeri.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/bjijgUR/download_game_ultimate_robot_fighting_offline.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480182/normal_6034962ba23b1.pdfIn PDF document text
    • https://ratesikumetu.weebly.com/uploads/1/3/1/1/131163578/jukosipofitalis.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/lomixuvelogutomukodowaxug.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/what_is_the_basis_of_psycho_cybernetics.pdfIn PDF document text
    • http://bigchance.pw/anime_tv_for_android_phone65b1z.pdfIn PDF document text
    • http://vavesojijakoju.iblogger.org/acara_naplan_2014_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupisovid.epizy.com/mabab.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_off0000e783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE783 5608 bytes
SHA-256: 8f9e209bf8321c19fee161b9f4bfe4ede3837ea96e894441112712b7f915cff6
font_01_sfnt_off0000fa8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8A 9788 bytes
SHA-256: 089cd5827687a8af6e5b1a5827081109ceedaba30ed0ddbb7fd3a4b139faeaa2