Malicious PDF — malware analysis report

Static analysis result for SHA-256 259b79875d7dd73a…

MALICIOUS

PDF

71.6 KB Created: 2021-03-09 19:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: aed8344c4e2f6c3b233519185f6625c5 SHA-1: ee0d9acfaa633584fb52bf862c3e433b21ad1455 SHA-256: 259b79875d7dd73a04c87c50e042165d7dd0aac55382342763a78a64ac1a6112
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 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.
  • 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=ted+gibi+konu%25C5%259F+carmine+gallo+pdf In PDF document text
    • http://stavki.link/mobile_app_manager_jobsjriya.pdfIn PDF document text
    • https://nobaletakalesig.weebly.com/uploads/1/3/2/3/132302751/rulopina.pdfIn PDF document text
    • http://afracheat2.xyz/14063194238xmmix.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/best_gary_vaynerchuk_books.pdfIn PDF document text
    • http://ericksandoval.com/688790536612khzk.pdfIn PDF document text
    • http://bamirajewenexo.medianewsonline.com/jifozufupurefapeb.pdfIn PDF document text
    • http://cheapkeys.site/negivemumakaxugacw4ug.pdfIn PDF document text
    • https://xixolediz.weebly.com/uploads/1/3/4/5/134513169/1352205.pdfIn PDF document text
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/0b2474a2c59a6ab.pdfIn PDF document text
    • http://fefuzebamag.iblogger.org/what_is_the_difference_between_nike_club_and_academy_cleats.pdfIn PDF document text
    • https://kopezufotixese.weebly.com/uploads/1/3/1/1/131164020/85aed8d6a687c6a.pdfIn PDF document text
    • http://slmit.fun/bilinear_form_matrix_calculatorsdz87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_f4361bf5b0be48d5b0350191d502a941.pdf?index=trueIn PDF document text
    • https://53860ffb-5975-4088-b838-5c82367c2827.filesusr.com/ugd/0d2908_c50dab510815404bbca6c6eb55f719c3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/428072ee-4034-4e9f-9cb1-7442edcfe4a5/easy_piano_christmas_songs_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b65425d5-b246-4d8d-b528-659731b75fcb/74344147402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ef6af65-94ca-4a3b-a898-fc4f9cf88fd8/how_to_type_a_number_cubed_in_word.pdfIn PDF document text
    • http://wosekamilos.epizy.com/3d_shapes_worksheets_2nd_grade.pdfIn PDF document text
    • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.filesusr.com/ugd/afbef4_630da65d3f9141779ba783de7d68f208.pdf?index=trueIn PDF document text
    • http://leriwegozeko.epizy.com/gantz_perfect_answer_full_movie.pdfIn PDF document text
    • http://ganusigesu.rf.gd/dironugajesok.pdfIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_9633eeef2df6427a8778af0fbc1207e5.pdf?index=trueIn 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_off0000d600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD600 5700 bytes
SHA-256: 0ea8ef23574b4ff0a5a165f56e9ab259ee0e3dafcb75c2109ad95245aecb3ed1
font_01_sfnt_off0000e950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE950 11876 bytes
SHA-256: cbbb548846c0357e02e5dd4277bd83025753e7441b9debb8ccaaf8189b8f8059