Malicious PDF — malware analysis report

Static analysis result for SHA-256 e577b38e002d8bfc…

MALICIOUS

PDF

74.9 KB Created: 2021-02-04 23:22:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 155db3ac19b9f5b8b5d26c5d7e97eaed SHA-1: dfaf534ecc2927d2d8e0bcf8350ef6b266b19bfa SHA-256: e577b38e002d8bfc05a6df15f085f2f6233011097729b7a195c5d7ded8880c50
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://jacksth.ru/wb?keyword=mailspring%20android%20app PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421615/normal_600d0675b0472.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406787/normal_6010fb78a8092.pdfIn PDF document text
    • http://jufidozotazi.66ghz.com/lagu_bon_jovi_always_acoustic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475204/normal_5fdc7a9db9f60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5fe9cfc9b9b0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503309/normal_5fcd97e66075a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413122/normal_5fd5f290bab68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450417/normal_5fdc42c7cb2db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://palojolasorut.rf.gd/freeman_guerrilla_warfare_unit_guide.pdfIn PDF document text
    • http://xitutudatiri.epizy.com/earth_sky_meteor_shower_guide.pdfIn PDF document text
    • http://vugapadilubokis.epizy.com/badminton_court_diagram.pdfIn PDF document text
    • http://kegipufi.rf.gd/jedikomonoseduxij.pdfIn PDF document text
    • http://lenixad.epizy.com/worksheet_episode_1001_solutions_introduction.pdfIn PDF document text
    • http://kivajujudupogij.epizy.com/protist_dichotomous_key_activity_answers.pdfIn PDF document text
    • http://luwawabegopit.rf.gd/diviko.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/62152309968.pdfIn PDF document text
    • http://jibogifimot.epizy.com/baraka_da_prince_mawazo_video.pdfIn PDF document text
    • http://losaxoxajav.epizy.com/34555362092.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_off0000e774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE774 5132 bytes
SHA-256: 4f5408073e728bddb353a111f16956a4c790b4951203700a3214c158c1b33dbe
font_01_sfnt_off0000f900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF900 11156 bytes
SHA-256: f7a3dcc5f0f47ed2afbdd0dfa2ce67a10081a191f79c3c9205b77302f05d74b4