Malicious PDF — malware analysis report

Static analysis result for SHA-256 64afd9ab830a0a2a…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 10:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9b1f181383814a6ecac0bf614052be28 SHA-1: 1ff061e054ed0486b175e9ae3553f590e18b4018 SHA-256: 64afd9ab830a0a2a7804504a36fc19b0f4a6c14f92f59b6c32cb1cfcd1ddc4fb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://baarspo.ru/aws?utm_term=how+to+graph+equations+graphing+calculator PDF link annotation
    • http://usesoda.pro/21st_birthday_invitation_wording_templates5cko2.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/5icjhha/bike_racing_2019_video.pdfIn PDF document text
    • http://omoikiri.info/business_proposal_letter_email_format9xmrg.pdfIn PDF document text
    • http://stankoff.org/ethics_for_the_new_millennium_sparknoteswqld5.pdfIn PDF document text
    • http://zuxegesa.iblogger.org/craftsman_garage_door_opener_not_programming.pdfIn PDF document text
    • http://acupofjacob.com/246296248pkovo.pdfIn PDF document text
    • http://numberoone.xyz/compendio_de_fisiologia_guyton6hj3o.pdfIn PDF document text
    • http://websporizle4.com/let_it_go_sheet_music_violinivznc.pdfIn PDF document text
    • https://zilifanaj.weebly.com/uploads/1/3/4/4/134444715/85b2d063.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/lebejos/standard_bed_sizes.pdfIn PDF document text
    • http://bibirosomuxir.epizy.com/wimuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/79560100468.pdfIn PDF document text
    • http://tivogowajap.epizy.com/conjunction_worksheet_for_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/28864148454.pdfIn PDF document text
    • http://nedenapurolaket.rf.gd/gc_university_faisalabad_bsc_date_sheet_2019.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_off0000e011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE011 5376 bytes
SHA-256: b2cfd4a7bea5f629d742fff314adfb3a9e253f88032915b44d425ba611c1a704
font_01_sfnt_off0000f268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF268 10796 bytes
SHA-256: 6794ae44578be37bd42aa7014f6fbe520a1057293d33c6a0ca02ccff3aabae52