Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d04fc618b08365…

MALICIOUS

PDF

67.3 KB Created: 2021-02-21 01:48:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4238146b8536720d2fdede1b710d5c13 SHA-1: 2c50f4c31fc9497f77b4ac8bfa0793a6cf626b2a SHA-256: a3d04fc618b08365ddacadb7c3d38144e700d61d0d844a1c1ce0a6c0212cb797
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://seumenha.ru/wix?keyword=excerpt+from+walden+answer+key PDF link annotation
    • http://fepotarugagi.22web.org/snakes_and_ladders_esl.pdfIn PDF document text
    • http://bonaletikireje.iblogger.org/kikemarugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_5fe824bd4d3f3.pdfIn PDF document text
    • http://visatog.22web.org/invoice_paid_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_601983fc32004.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vinepefep.rf.gd/accountable_ipa_appeal_form.pdfIn PDF document text
    • http://roxuriwiladubew.rf.gd/fitijajubete.pdfIn PDF document text
    • http://rovuwuruw.epizy.com/austria_league_table_form_stat.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/23293429055.pdfIn PDF document text
    • http://pomagupivedib.epizy.com/nameless_otome_guide.pdfIn PDF document text
    • http://gusagokasu.epizy.com/59158482857.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/rilizenuda.pdfIn PDF document text
    • http://jomozaredid.rf.gd/samsung_allshare_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/81675667436.pdfIn PDF document text
    • http://foripoj.epizy.com/aaru_movie_songs_free_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/21280909520.pdfIn PDF document text
    • http://jakezijaredu.epizy.com/tebitori.pdfIn PDF document text
    • http://wawaxujogoned.rf.gd/enhance_wifi_reception_android.pdfIn PDF document text
    • http://joxesovifelerav.epizy.com/43178243214.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_off0000cc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2F 5584 bytes
SHA-256: 0137329c4763a585a70f6eda77066b01346a4541f432cb694715572b0fdd8b71
font_01_sfnt_off0000df39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF39 9616 bytes
SHA-256: ac8ab75cf4b4f8b997345c9b973262ed88b8d1da9be62963ff42fb665a768e43