Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5069566bdff72ac…

MALICIOUS

PDF

36.6 KB Created: 2020-11-09 11:55:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 25b09a0c6b60213f2dd780bc684f4079 SHA-1: a59dc1c06fe4bb2a3046a2d5f938e46569b2e89e SHA-256: a5069566bdff72ac9496bb4fee532543b5b80fd604dd4b78bbaa71070f8bfb39
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafftec.ru/aws?keyword=one+punch+man+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5fa45fed8b53a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379486/normal_5f99af7fa40eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424328/normal_5f9e3483684c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_5fa5a18d8fd01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374978/normal_5f91f4fb04492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f88902d2d8d7.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/gomakobez/90454627086.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/boredom_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/81767059943.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/eberron_3.5_prestige_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/paleo_diet_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/solving_equations_and_inequalities_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69eaf29-81af-4045-824e-485bc8643c83/guia_para_el_examen_global_de_conocimientos_nivel_bachillerato_conamat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94de10ed-9e2e-4f32-be60-878da11879ba/61474153292.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_off000053cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CC 5116 bytes
SHA-256: 4efdd7aa3732be67c01f9a072f4dcb295a91fa6aabb3fae86388aab0fcf8546d
font_01_sfnt_off00006511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 9708 bytes
SHA-256: 29a50eff16520ca9f8ded4745548571d454ac60e83ad6d762ca488d280351bd0