Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b833499ad2297d…

MALICIOUS

PDF

65.1 KB Created: 2021-02-26 20:15:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 49e61d0cf58f9a78485de4ed299b8925 SHA-1: b36746202d552f2ebbb9f46dd85421c04f267994 SHA-256: 35b833499ad2297d5ee124e85058cf699532cefdc387407722d7895e32740bba
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/award?keyword=plato+five+dialogues+pdf+download PDF link annotation
    • https://cdn.sqhk.co/buwuvibija/hWDygi5/34273798784.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/lg_wireless_headphones_for_smart_tv.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/explode_the_code_books_1-8.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/jiigr0O/gibatesolukixalonetuwev.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/edward_said_crisis_in_orientalism.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/the_quadratic_formula_worksheet_math_aids_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/gjZuX1P/kingdom_nick_jonas_cast.pdfIn PDF document text
    • http://phulop.store/cardinal_newman_high_school_sixth_form1e2kq.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/leteraxewe/format_of_ignou_assignment_cover_page.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/reportar_lamparas_de_alumbrado_publico_morelia.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/taxapinudosuf.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/configurare_mail_aruba_su_gmail_android.pdfIn PDF document text
    • http://pujumek.myartsonline.com/effectual_definition_used_in_a_sentence.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/mujos.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/58985284640.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_off0000c372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC372 5264 bytes
SHA-256: 3580fa12f3482e497e6d5932186e7e5b779cec6507320a053b94cd58ac503d47
font_01_sfnt_off0000d58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58E 9944 bytes
SHA-256: 95fd7ac37044337321e5ae33c940970b05ece08063ef61e830949ced1ebdeb12