Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f65c5f1689a9ef9…

MALICIOUS

PDF

70.6 KB Created: 2021-02-25 12:21:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b823e80afbe3569698d7f0978bcabd1d SHA-1: 6c188bcdb141989bd02d1e1bd1fed09794d65bb6 SHA-256: 0f65c5f1689a9ef99099d85f30f191341eaabd45f7fb69860b3a84e6e2f9f7cb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=myles+munroe+books+pdf+leadership PDF link annotation
    • https://cdn.sqhk.co/jojewezalika/eJhhgjy/55851428065.pdfIn PDF document text
    • http://twoup-viktoria.online/remstar_pro_m_series_humidifier_light_flashing7adlu.pdfIn PDF document text
    • http://sodahq.pro/gesetorf0t6z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470699/normal_60121bf6a5524.pdfIn PDF document text
    • https://cdn.sqhk.co/bojodunaluko/exNJjh0/pogizuniwutak.pdfIn PDF document text
    • https://cdn.sqhk.co/wasefago/gh1icFS/26321133131.pdfIn PDF document text
    • http://martans.space/acute_inpatient_hospital_admission_guidelinesfosc5.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/71773976890.pdfIn PDF document text
    • http://nosinoski.shop/math_worksheets_for_grade_6e3mpi.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/ket_sample_testdiqp7.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/jaIghMj/woodworking_project_kits_for_beginners.pdfIn PDF document text
    • http://creamwalls.online/potinbdl41.pdfIn PDF document text
    • http://visionnew.xyz/academic_research_report_example3smfx.pdfIn PDF document text
    • https://cdn.sqhk.co/desiruzag/eqgejc2/photo_and_video_downloader_for_instagram_pro_apk.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/ravutijogifuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD763 5592 bytes
SHA-256: 59c129f264ba035a75b65c163bbf369743fdc055097b5b5c157e98856b1203e8
font_01_sfnt_off0000ea4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4B 10372 bytes
SHA-256: 2456a0e7f0244648a860c902c4cedac6f44b1fa4e7e0f3e93ac0e373b091c081