Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a82a3bb56e0f600…

MALICIOUS

PDF

70.3 KB Created: 2021-02-18 23:32:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7c7e81664f63936b097121f3f38561ab SHA-1: 34ae8d75559fb6cf4fb3528b6c5e26b7b687ddc5 SHA-256: 8a82a3bb56e0f600694a710ef79a7961cca4a1763bf03423e087ad07f83ac572
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=sonic+2+android+apk+mod In PDF document text
    • http://sallely.xyz/album_songs_masstamilan_in_tamilqkqe4.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/3kUGtOk/viral_funny_videos_2018_philippines.pdfIn PDF document text
    • http://mapovepajosoxub.iblogger.org/string_theory_for_beginners.pdfIn PDF document text
    • http://dunetetemob.22web.org/50814416070.pdfIn PDF document text
    • http://konufij.22web.org/europa_report_watch_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414871/normal_6029e216e6b3f.pdfIn PDF document text
    • http://bukibiroxofin.22web.org/christmas_open_house_invite_templates.pdfIn PDF document text
    • http://policyhelpcenter.com/jakonapey5u1j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412413/normal_6025291ee9ce1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_5ffa793970414.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wozojatoxako.epizy.com/sijalagozozeduxagad.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/analytical_report_cover_page.pdfIn PDF document text
    • http://sedozod.rf.gd/ajith_songs_5starmusiq.pdfIn PDF document text
    • http://pewusufep.epizy.com/auctionator_classic_wow_guide.pdfIn PDF document text
    • http://xegefonupekowa.epizy.com/puwuzam.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/ecfmg_status_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/fafsa_student_loan_deferment_form.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/74291930357.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_off0000ce6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6B 5308 bytes
SHA-256: 7717b03771508ded40ae54d63683dd0bb9cec5e17ca17007edce209fa16c45da
font_01_sfnt_off0000e06d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06D 17364 bytes
SHA-256: f90f7ffc6bdfd3400d9c68a85a510b5272abcbedb43828c5e9182a70196f7164