Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4a42d7ad06f762…

MALICIOUS

PDF

66.9 KB Created: 2021-02-27 14:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 85fe837ee1c2dcae688b88c4e2da1d00 SHA-1: fe317f7f1c51e4925aa62a3244f985500136cd24 SHA-256: 3e4a42d7ad06f76245af67fc3d8c706560d9dbab9e3eadcfd02110371d75e5a4
184 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
  • 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=garmin+nuvi+50+manual+en+espa%25C3%25B1ol In PDF document text
    • http://naturwow.space/head_first_python_third_editionl4o3a.pdfIn PDF document text
    • http://usesoda.pro/10627827119em4zb.pdfIn PDF document text
    • https://zotepuzexalebox.weebly.com/uploads/1/3/5/3/135397030/kulinavuberure.pdfIn PDF document text
    • https://cdn.sqhk.co/muzexeragod/eQhiuhi/37750031637.pdfIn PDF document text
    • https://waramexebogod.weebly.com/uploads/1/3/1/8/131856917/e86926158c4e9c.pdfIn PDF document text
    • http://moxolesapudeli.22web.org/marsh_hill_primary_school_ofsted_report.pdfIn PDF document text
    • https://milolumixi.weebly.com/uploads/1/3/4/4/134459833/1937297.pdfIn PDF document text
    • https://nalivugubogepa.weebly.com/uploads/1/3/0/9/130969323/8493209.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tafikepuvanotu.epizy.com/1451057361.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/irda_online_hall_ticket.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/angular_template_driven_forms_unit_testing.pdfIn PDF document text
    • http://kerizef.rf.gd/tuxemuxokinafusuforotitow.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/ambulance_coloring_pages.pdfIn PDF document text
    • http://perevis.epizy.com/cada_del_cordn_umbilical.pdfIn PDF document text
    • http://malinaliwul.epizy.com/hemmed_edge_sheet_metal.pdfIn PDF document text
    • http://vububogux.epizy.com/arjun_reddy_hd_movie_in_isaimini.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/48480229011.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_off0000c77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77B 5536 bytes
SHA-256: 86e9f93ef6bd9fd9bd225227dc7e7df533691209377173d0ca71f102465b01b3
font_01_sfnt_off0000d9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FA 10104 bytes
SHA-256: ddace5b6701dfb0cd5998cf7a8ff7b6a2a274a98d031ebe6000fc82c2732f64e