Malicious PDF — malware analysis report

Static analysis result for SHA-256 7499d7b0e7e1a2e4…

MALICIOUS

PDF

65.7 KB Created: 2021-02-12 12:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eec02c532e2eb6e35b27d16d43d8496f SHA-1: 1754a4fa1920d0b03c20128cece7d1a76774530a SHA-256: 7499d7b0e7e1a2e40eac815180a7a8075c1b00c1f2cc534e529de4327ac1eaac
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/123?utm_term=fnaf+1+office+drawings In PDF document text
    • http://amsidgi.xyz/37506189320jlrxd.pdfIn PDF document text
    • http://reawont.online/71269350088qf8bv.pdfIn PDF document text
    • http://6gusevshop.space/dividing_whole_numbers_into_decimals_worksheetb2muw.pdfIn PDF document text
    • http://5gusevshop.space/jigeromuji0vtbq.pdfIn PDF document text
    • https://cdn.sqhk.co/kujotukil/VKghwqv/n._o._v._a._legacy_apk_download_uptodown.pdfIn PDF document text
    • http://idealicaufficiale.website/455876729455zhta.pdfIn PDF document text
    • http://euroshopmn.space/sadness_and_sorrow_chords_pianop4xss.pdfIn PDF document text
    • http://atlas-copco.su/information_systems_a_managers_guide_to_harnessing_technology_version_5.0bmawv.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/gzJ86ij/88821913097.pdfIn PDF document text
    • http://wazixusazajafem.22web.org/5648505144.pdfIn PDF document text
    • http://nncucuucuc.space/welerezadinuduripi6wu00.pdfIn PDF document text
    • http://cmb-eco.com/kevexuzeko4ph98.pdfIn PDF document text
    • http://nejamaranidirit.22web.org/free_enterprise_system_worksheet.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/plexiform_neurofibromas_picturesdn52w.pdfIn PDF document text
    • http://wgathering.org/alone_movie_tyler_posey_remakem7hge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvituze.epizy.com/clostridium_difficile_guidelines_2017.pdfIn PDF document text
    • http://wupaxozejite.rf.gd/bedingte_formatierung_excel_datum.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/natefofumigaxojazulasibu.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_off0000c2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F0 5256 bytes
SHA-256: a94e724b4f5d463dcecd0bf9f1a54450820acb7b529ba17d716ea7944c4c1fa4
font_01_sfnt_off0000d502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD502 10732 bytes
SHA-256: 0ad965496906fb9839dac6bc21dc7fffd4479f62bfd0fded5010444f4d0cdce6