Malicious PDF — malware analysis report

Static analysis result for SHA-256 23610919d81c61e0…

MALICIOUS

PDF

72.3 KB Created: 2021-03-04 01:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4af03059ff26b7cabb8b197fdc25a71e SHA-1: cd69cb1ee62d16c10daa1c50f9bb53825aebdba8 SHA-256: 23610919d81c61e0acbdca75cefc283d9749808acb56e7a811023900e9a30a63
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://crophysi.ru/wix?keyword=legend+of+spyro+dawn+of+the+dragon+xbox+one In PDF document text
    • http://mofemaruwek.sportsontheweb.net/does_soy_milk_have_carrageenan.pdfIn PDF document text
    • http://lazotub.mywebcommunity.org/deep_sea_fishing_rods_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_602dcccab3d26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423462/normal_603d1ad09f0f9.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/what_sd_cards_are_compatible_with_galaxy_tab_a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_601b2dafa3223.pdfIn PDF document text
    • http://lokubakodo.getenjoyment.net/gojeparomefesotefobi.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/how_does_the_bulletproof_diet_work.pdfIn PDF document text
    • http://miwasigal.mywebcommunity.org/94658276400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_600c60307bc94.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/56371704479.pdfIn PDF document text
    • http://ketoxitigojaluk.sportsontheweb.net/romilademixepizizepazujo.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/zizene/business_analytics_jobs_texas.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/boards_and_beyond_promo_code_august_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/26945111692.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/biotage_turbovap_lv_manual.pdfIn PDF document text
    • http://xawiwevivuzox.onlinewebshop.net/39650077860.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_off0000e094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE094 5616 bytes
SHA-256: 4a885deeafdec923bb5b97789eb451b77936e3bbd2953b2f7fc0e4e6bb16f08b
font_01_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 9460 bytes
SHA-256: f6d7711323531013041bb9e266b5105a59154f3804cc44bc1b75ce3d3c0145f5