Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4509a670cb4ced5…

MALICIOUS

PDF

66.5 KB Created: 2021-03-01 22:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d386b76309fbaf40549b3ef2255803bd SHA-1: 57babae9a27fcd8c16a6497fa1f0eeef71921a1d SHA-256: f4509a670cb4ced5bc8412f58ae98f3e36faa9cdc871f31b857de92ea56beff7
126 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
  • 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://xezojetit.ru/wix?keyword=critical+ops+unblocked PDF link annotation
    • http://prizyivnik.ru/davis_drug_guide_app_login1hatv.pdfIn PDF document text
    • http://wibetunutivemi.iblogger.org/maforoxowuvudelikevato.pdfIn PDF document text
    • http://xosuvirakogaf.iblogger.org/82001600798.pdfIn PDF document text
    • http://pop-marketplace.ru/werilt8hur.pdfIn PDF document text
    • http://baltika-trans.com/frank_sinatra_album_downloadf3273.pdfIn PDF document text
    • https://getelomivono.weebly.com/uploads/1/3/0/7/130776590/e5ac1c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rojanesifilagu.myartsonline.com/how_to_add_zoom_meeting_to_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/kundali_bhagya_episode_1.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/45869135640.pdfIn PDF document text
    • http://loluxemo.epizy.com/88442809154.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/larut.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/vijusidesujude.pdfIn PDF document text
    • http://rovunebezub.epizy.com/application_form_sample_japan_visa.pdfIn PDF document text
    • http://zulegexexewunil.epizy.com/molecular_cloning_a_laboratory_manual_fourth_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/darling_all_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/robbery_bob_2_hack_unlimited_money.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_off0000c7de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DE 5176 bytes
SHA-256: 16fe5542190a9f4339757fabb3475d7bfaca4d4ed8fe9611a2d3fe54f467764a
font_01_sfnt_off0000d979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD979 10484 bytes
SHA-256: e772b2f8f8eab120316ba862eddbb5555df1600be7e958382e45de644fe610ab