Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eac253be42516af…

MALICIOUS

PDF

75.0 KB Created: 2021-02-24 05:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 05a5f44ceea9d0971d34da24b9e1324a SHA-1: fd624c4104a13de66664da3268a30c6632558e8a SHA-256: 4eac253be42516afd13ea1e2a681f55f6555f1b411fa49d04181500ee7f29dd2
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=qualitative+analysis+pre+lab+answers PDF link annotation
    • http://evilcheats.fun/9081079925vk93f.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/bN1ijar/assembly_line_worker_description.pdfIn PDF document text
    • http://beliyden.xyz/how_to_learn_self_discipline_at_homebtjp9.pdfIn PDF document text
    • http://jibifiva.22web.org/backbeat_pro_2.pdfIn PDF document text
    • http://lovelyhouse.online/buxapaxilepemimixkl.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/jebupofedijakuk/brand_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/learning_strategies_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/37773539050.pdfIn PDF document text
    • http://dinelak.rf.gd/50195529578.pdfIn PDF document text
    • http://pumumiz.epizy.com/93618594584.pdfIn PDF document text
    • http://piterar.epizy.com/puxozozalugasukonek.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/baby_george_rotisserie_manual.pdfIn PDF document text
    • http://xujekapowizi.epizy.com/1069421585.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/84228736005.pdfIn PDF document text
    • http://jefebewo.epizy.com/listening_skills_test_prep_escape_answer_document.pdfIn PDF document text
    • http://sonogobujajeva.rf.gd/5543712351.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/akram_rahi_songs.pdfIn PDF document text
    • http://lolukojalima.epizy.com/84590292798.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/watinulazowazi.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/demand_for_payment_letter_texas_template.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_off0000e84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84A 5268 bytes
SHA-256: dfa785a72586c0006c9b2fac28168fd1aab81a2ba77797544aa9a3d3d00cacab
font_01_sfnt_off0000fa59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA59 10520 bytes
SHA-256: ca45867851a7ec589cab71e918437e27e84303b394ff5604ab2f2c039b410efa

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