Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac984864f4dbe14…

MALICIOUS

PDF

77.0 KB Created: 2021-03-17 19:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 270499f0b6a4853e7a33c0f5050209ba SHA-1: 227b5b7bba1050e7a0c0208a765cd1992fb5f0a2 SHA-256: eac984864f4dbe149a054c90a4a6d0d092bc1a1608118fa77a9f8c0305d6cb8d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, flagging it as a phishing trojan. The document body, though heavily obfuscated, appears to be related to legal documents, likely a lure for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/strik?utm_term=ley+de+propiedad+horizontal+venezuela+2018+pdf PDF link annotation
    • http://gigezojiradof.scienceontheweb.net/breviario_romano.pdfIn PDF document text
    • http://luxomozuk.mypressonline.com/kindle_instructions_uk.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/gexej.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/99175051519.pdfIn PDF document text
    • http://liwitesuzemumex.sportsontheweb.net/wanenogejonutoxoxe.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/59329151717.pdfIn PDF document text
    • http://misujupino.getenjoyment.net/2883408193.pdfIn PDF document text
    • http://kamefutebiwef.mywebcommunity.org/kixamajopomemaxes.pdfIn PDF document text
    • http://kuvuradivikosef.iblogger.org/fiposamozeso.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/texas_defensive_driving_section_2_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifinuxob.epizy.com/tutorial_sql_injection_manual_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/93722211657.pdfIn PDF document text
    • http://kadegezopofog.rf.gd/lubimozebapirupuz.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/kedam.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/bootstrap_mobile_admin_template_free.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/relokufosozisetomorijuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/54966336152.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/helo_status_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/fifty_shades_of_grey_soundtrack_download_zip_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/21461552848.pdfIn PDF document text
    • http://golujaxi.epizy.com/hinario_caboclo_guerreiro_vo_corrente_cifrado.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/feelings_faces_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/new_life_bookstore_ri.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_off0000eae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 5624 bytes
SHA-256: 3832ff3e691d9e3f622cf3c376358845d0a0a44d3227300e55b50fe457025c42
font_01_sfnt_off0000fe1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1E 12032 bytes
SHA-256: 683bdee1bacc5447b3af679332bc658ad333dc70932b82072bc68bf6fec0a3d8

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