Malicious PDF — malware analysis report

Static analysis result for SHA-256 212ca37436fcf334…

MALICIOUS

PDF

68.2 KB Created: 2021-02-20 18:00:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: db0dcf1c11c2344287853b01f39f193b SHA-1: 6b188f6963793c947f1ab91c0d07215040ebfe56 SHA-256: 212ca37436fcf334baffb917cd8f1e9bd3de0df906840c80a58cb50d05fdea2c
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=acc+202+budget+variance+worksheet PDF link annotation
    • http://glossywp.online/zerilutwgxmn.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/sojilegejixedudeliwevuh0kd1.pdfIn PDF document text
    • http://biomanix.best/terraria_teleporter_network8howj.pdfIn PDF document text
    • http://raisinshq.club/linda_raschke_professional_trading_techniquesjoiaq.pdfIn PDF document text
    • http://drive4mclaneaustell.com/classifying_angles_worksheet_grade_4g7900.pdfIn PDF document text
    • http://balifruit.com/95609055220njm5a.pdfIn PDF document text
    • http://ipatovaalena.ru/complex_sentence_using_an_adjective_clause1o4wf.pdfIn PDF document text
    • http://resimpub.com/52642481369z1zo7.pdfIn PDF document text
    • http://vivadoctor.ru/rang_de_basanti_chola_remix_songbgurd.pdfIn PDF document text
    • http://gta-msk.ru/zadelesinugufunefv5jof.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/laradusa/calisthenics_unity_workout_program.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/vsco_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/fomogivuberajavenixu.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/planificao_caldeiraria.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/zemoxibawebolosinujuli.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/best_cover_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/56784181167.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/catia_v5_r21_portable.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_off0000caa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA0 5788 bytes
SHA-256: ac0c7d88145f1d34594cbc21e8d6bce37c2f99cd04d798c19e428cf2bc51c795
font_01_sfnt_off0000de68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE68 11440 bytes
SHA-256: 5c308707e30c3170423d7d32a862bffc004e8fb0afcac37cfa5651c7d84a0006