Malicious PDF — malware analysis report

Static analysis result for SHA-256 483c6ff2175c69ea…

MALICIOUS

PDF

70.1 KB Created: 2021-02-20 02:18:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d5f1dcf7e11f7fe3b991161f2b6af14b SHA-1: 54c924233cb3e2e8826dc020c709494d7b094ddd SHA-256: 483c6ff2175c69ea6ff38e25b1eec3182db877f3e3cb7d22e06b52159cea9879
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=bolc+army+reserve In PDF document text
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5ffa7952e5bd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446942/normal_5fd17ddd438c6.pdfIn PDF document text
    • http://pumba.fun/blastall_output_format47lou.pdfIn PDF document text
    • http://flymoney.net/inocencia_interrumpida_libro8pdjx.pdfIn PDF document text
    • http://topuniversityru.fun/does_sky_router_have_wps_button3updu.pdfIn PDF document text
    • http://kkkirrreeee.space/a_u_m_s_full_formfcfzg.pdfIn PDF document text
    • http://kurs1.xyz/xamenodalupobub8v7t.pdfIn PDF document text
    • http://help-mediasupport.com/white_kitchen_family_room_combotjhqn.pdfIn PDF document text
    • http://minuette.me/how_to_begin_using_apple_pencilh35tj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_5fdb5dd5b7b88.pdfIn PDF document text
    • http://vigastlens.xyz/bimbofication_transformation_deviantart0ugy3.pdfIn PDF document text
    • http://fineagencyy.com/critical_thinking_interview_questions_and_answersks6zf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454179/normal_600fcebbb8c62.pdfIn PDF document text
    • http://zuvomitapafi.22web.org/alpine_mrv-m500_installation.pdfIn PDF document text
    • http://creditinquiry.info/27447166825vyxhu.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/vastu_shastra_in_englishi2tbs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tivogowajap.epizy.com/stickers_png_apk.pdfIn PDF document text
    • http://gibonoxemibete.rf.gd/anaganaga_o_dheerudu_2011_telugu_movie.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_off0000d7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AB 5156 bytes
SHA-256: 1e631f7f5463a0b4cf4fa4242f43c8f0acea3959c86c4bdb343fbe273769b421
font_01_sfnt_off0000e92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92D 9940 bytes
SHA-256: a97238c8e1de306b19cfce57e64f98ddb5242933e5eed7428a8361b77ceb1c6c