Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba064473bbaa60b…

MALICIOUS

PDF

73.2 KB Created: 2021-02-10 17:20:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 31ef629db5a3a3daef4bcf0f1c062cd5 SHA-1: d04b59754926eeca4c5858933c9ee919ea702da6 SHA-256: 5ba064473bbaa60bb900e0aab6b0ebfc2e8f0889ad5b6991bf604458828db0e8
184 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
  • 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/wb?keyword=iphone%20x%20camera%20filters%20for%20android In PDF document text
    • http://voicebftyi.com/lieutenant_columbo_episodes_en_franckkn5d.pdfIn PDF document text
    • http://libertinemodels.com/vejovamenagerede4xu3f.pdfIn PDF document text
    • http://supermagazforsale1.xyz/sogutukemurozv508s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458132/normal_600363687eab0.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/gozakasijefazaboguzimedon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388282/normal_5feb24b2db05a.pdfIn PDF document text
    • http://regvoolkim.website/80207859695k3gyu.pdfIn PDF document text
    • http://socialwave.me/caso_practico_de_liderazgo0ghfb.pdfIn PDF document text
    • http://kifenefazujiz.iblogger.org/advertising_objectives.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/akele_hum_akele_tum_movie.pdfIn PDF document text
    • http://vujipopeb.rf.gd/roruvanetavomanidetomori.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/math_salamanders_area_sheet_6.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/sarelimekosi.pdfIn PDF document text
    • http://fuvezijejek.epizy.com/bal_ganesh_movie_songs.pdfIn PDF document text
    • http://bumojito.rf.gd/99543039738.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_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 5400 bytes
SHA-256: 410038c6378f62e920a263c4d156c9db6fd2dfaafb833cc4bd4d8a5119dfc996
font_01_sfnt_off0000f304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 10920 bytes
SHA-256: fc30fe03052dbf65b40b73cdbf34df8cc24375f1f9c226842ce369c6041108d0