Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba6696be5b8fdc4…

MALICIOUS

PDF

71.2 KB Created: 2021-02-19 05:16:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ccf6f439a50449e1c72c74f4255a5b19 SHA-1: ad17d3cb7e8ca36d947ce306092e3b88d01b9412 SHA-256: bba6696be5b8fdc4aac79a019aa9e2f9979769c79e10be34c17b10dc8c1e04b5
244 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
  • 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/123?utm_term=what+questions+are+on+the+georgia+permit+test In PDF document text
    • http://busurman.space/how_to_check_f_table0qef8.pdfIn PDF document text
    • http://seluluxafej.22web.org/airline_industry_research_report.pdfIn PDF document text
    • http://i12tws.website/fl_studio_12_producer_edition_free_macb9ubn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493891/normal_5fdbdafcdff89.pdfIn PDF document text
    • http://aromaita.space/chamak_movie_imagesdncb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460066/normal_6018df3d6b0a1.pdfIn PDF document text
    • http://pimolala.22web.org/resident_evil_afterlife_imdb_parents_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409096/normal_5fe95a2ee9291.pdfIn PDF document text
    • https://nonovobuzodeku.weebly.com/uploads/1/3/5/3/135348203/sidujarumemis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486997/normal_602925e776357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468820/normal_5fea4170e2c6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_5fdac650c4c0e.pdfIn PDF document text
    • http://yourcy.com/exhibition_stall_design_portfolioluzht.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404122/normal_5ff5805513284.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://debalipusafuj.epizy.com/the_amazing_spider_man_2018_game.pdfIn PDF document text
    • http://vapasiwivomod.epizy.com/dell_vostro_3670_datasheet.pdfIn PDF document text
    • http://nowopuxi.epizy.com/arya_2_movie_in_tamil.pdfIn PDF document text
    • http://wisakixatepifu.epizy.com/wewen.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_off0000d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD886 5340 bytes
SHA-256: a75ddab5a79ba92d5b14d5611eba570098df912f2f84031a751d97681bb951ee
font_01_sfnt_off0000ea96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA96 10876 bytes
SHA-256: a6e122e7b38ffa6f67bac2e1adc097fd1f316215f947428c79e001f19ab5357a