Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f499c0b020a5c16…

MALICIOUS

PDF

71.8 KB Created: 2021-03-09 18:54:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6c1c83ba1a2908be8aa4d30ab80efeeb SHA-1: f4749a067be3fb1a555c5b2aabd3f2dd6ca3e42f SHA-256: 6f499c0b020a5c16b2ab42c0fda91aedceada86110886877e9c69fe78e39e9fc
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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://dagazafija.weebly.com/uploads/1/3/1/4/131484603/fisoxapudo.pdf.
  • 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://botokaw.ru/wix?keyword=chemistry+book+answers PDF link annotation
    • https://dagazafija.weebly.com/uploads/1/3/1/4/131484603/fisoxapudo.pdfIn PDF document text
    • http://pusulij.22web.org/servicenow_guided_tour_designer_for_service_portal.pdfIn PDF document text
    • https://salewuso.weebly.com/uploads/1/3/1/3/131379029/5390868.pdfIn PDF document text
    • http://xajabuzowa.scienceontheweb.net/why_does_germination_affect_cellular_respiration.pdfIn PDF document text
    • http://limesapa.iblogger.org/58166253880.pdfIn PDF document text
    • http://pikejofopon.mypressonline.com/how_do_i_know_what_generation_of_echo_dot_i_have.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/duganosuwef.pdfIn PDF document text
    • https://kawuwulaf.weebly.com/uploads/1/3/3/9/133987507/pivuvufaf.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/75152925299.pdfIn PDF document text
    • https://nobozemesatib.weebly.com/uploads/1/3/0/8/130874372/15138864f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poluxik.epizy.com/gibotuvut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d986ad6-c3b0-431b-93cf-2e933c0bc1a4/2039830995.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/ashley_madison_apk_cracked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7938cf55-50d6-4d76-a363-6ad486c503dd/67657722614.pdfIn PDF document text
    • http://mixezized.myartsonline.com/faringitis_viral_o_bacteriana.pdfIn PDF document text
    • http://tifilumiteva.epizy.com/mac_keyboard_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0f88fc-fc66-4c99-9114-1e2cbfba7175/how_do_i_find_out_if_my_apple_watch_is_waterproof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/744b5cf1-64e9-4f8b-a99d-8266a14953a7/88432908081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cb6f941-00b8-4012-8330-572733f7f5b5/norton_shakespeare_3rd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/improve_handwriting_worksheets_free.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_off0000d1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B7 5196 bytes
SHA-256: e5b9b1dfd062c5c1dc87db5842dcc6bb304f5de9918a11f060190d98d189bfb5
font_01_sfnt_off0000e342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE342 15172 bytes
SHA-256: 80ad8efec28462fbb97d8cb2fae0ebe5af14285bacbef9c8b6ceffb757cf311d