Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e58d806f703925…

MALICIOUS

PDF

87.3 KB Created: 2021-03-01 23:46:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 34db6bca0d18e1d4949f072d11cb8198 SHA-1: 15873cd098fedaa0b99e40ac3a73529c110a2cdc SHA-256: c9e58d806f70392570567d8534fdbe831ecb0dcaf57054e71913fcb94fbe03ad
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://jottigo.ru/wb?keyword=data%20science%20master%20degree%20usa PDF link annotation
    • http://sibatike.getenjoyment.net/56981242207.pdfIn PDF document text
    • http://acupofjacob.com/37461143790oxl51.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/2Aojcjd/zogopuzakafosi.pdfIn PDF document text
    • http://falutaburifa.iblogger.org/gimejufapuf.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/jTnIC7y/the_potato_factory_movie_cast.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/39391889898.pdfIn PDF document text
    • https://cdn.sqhk.co/pukikojat/fshbhjj/love_quotes_short_words.pdfIn PDF document text
    • http://ketaton.mywebcommunity.org/tuzumevu.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/vHhchHl/types_of_beards_2017-_2018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zagofij.onlinewebshop.net/40438645508.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/25704608686.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/lasimisefovela.pdfIn PDF document text
    • http://mikesivu.rf.gd/23841439322.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/factoring_distributive_property_worksheets_answers_7th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/dead_island_riptide_mods_xbox_360.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_off000116e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E4 5224 bytes
SHA-256: 9f1cfc0d8de3acacae9b1501c62e443a1e7598d0f1b6a906ef790d4e70bcae1c
font_01_sfnt_off00012899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12899 11748 bytes
SHA-256: 1b677c52cc3da1fb13c644637e7a6380f71fa2d8347592710d6429f4983ce6de