Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20460d540330aac…

MALICIOUS

PDF

75.3 KB Created: 2021-02-27 12:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1897bcad0c70601b1cf8345695403d1d SHA-1: ae866185d8aeb7d991b0364941cd5e974881c2af SHA-256: c20460d540330aacff4abe7fb1c4769423af03e68629cba5574af56d2e9f9d45
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://pelibifir.ru/aws?utm_term=what+chinese+foods+are+gluten+free PDF link annotation
    • https://cdn.sqhk.co/zanemulazif/epieXNR/madness_combat_9._5_soundtrack.pdfIn PDF document text
    • http://naturfresh.fun/96617966362oh3di.pdfIn PDF document text
    • https://zokevuwokonumez.weebly.com/uploads/1/3/4/6/134682223/fukatadukoz-bexasabiso-fogapak-vezolisuguz.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/7upd4WD/61058465754.pdfIn PDF document text
    • https://levapexufusetij.weebly.com/uploads/1/3/4/9/134904519/2a4f415ffd.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/PEcUgdT/f1_mobile_racing_2020_gameplay.pdfIn PDF document text
    • http://edayafar.xyz/2006_bmw_330i_problemsicqvk.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejagefep/diitQij/pixal_ninjago_set.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5feb190db5a23.pdfIn PDF document text
    • https://widosogepe.weebly.com/uploads/1/3/3/9/133986955/susagotasewogegokidi.pdfIn PDF document text
    • https://rulotukipaka.weebly.com/uploads/1/3/0/7/130776525/7731058.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/gekojulog/72124614662.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/solange_knowles_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/jediwogexipewofake.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/babylon_dictionary_free_english_to_persian.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_off0000e8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C2 5296 bytes
SHA-256: 91b214352179186d0f28a5f0e743d2759bbaf86cb6f6dcec81683fe02e5350a0
font_01_sfnt_off0000facd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACD 11108 bytes
SHA-256: 182827ca1bfc5696e5eb9eb397ca217c48eddb93f8cd3ad3e166438945874cdb