Malicious PDF — malware analysis report

Static analysis result for SHA-256 77deb67722ff5a8d…

MALICIOUS

PDF

65.5 KB Created: 2021-02-23 16:38:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a8da638ceaa6733d79741672bbcd2cfb SHA-1: 44b0e4d88f7d5162d304f24e7ccf7a0520cfe7ae SHA-256: 77deb67722ff5a8dd562ea49831febb4482240a6559ab0d5f5737770fc4aefa5
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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=tete+a+claque+2020 PDF link annotation
    • https://cdn.sqhk.co/zasemewiti/jbTPkij/battery_day_tesla_2020_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465131/normal_600d22b1746ca.pdfIn PDF document text
    • https://cdn.sqhk.co/mojuzizimu/sghBWzR/bug_bite_thing_shark_tank_deal.pdfIn PDF document text
    • http://lnstagram-support.live/dezufugesovepidumhzk4l.pdfIn PDF document text
    • https://cdn.sqhk.co/desixurate/aijvhja/zenwise_digestive_enzymes_walmart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425514/normal_601d4cde8dfab.pdfIn PDF document text
    • http://grigolia-studio.ru/inequality_word_problems_worksheet1lvf8.pdfIn PDF document text
    • http://doctora.club/triple_bottom_line_adalah3gvd3.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/3a46djc/strategic_marketing_planning_process_begins_with.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_602786d0036b2.pdfIn PDF document text
    • https://cdn.sqhk.co/vomuvojovi/igdSbjh/73655122807.pdfIn PDF document text
    • http://copyright-services-us.com/el_hombre_mas_rico_de_babilonia_google_drived2ocw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370767/normal_60053f0dc686a.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/kotenu/20027802309.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/ligularia_reniformis_tractor_seat.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/65241263592.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/hundreds_tens_and_ones_worksheets_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/dream_on_dreamer_album.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/75073008855.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/gigurepisigagule.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/77954805576.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/xufivivenabapupe.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_off0000c703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC703 4868 bytes
SHA-256: e102b2aac3f8a9265afdbe52b633a7e3452516606b1a06129773340d400a2b68
font_01_sfnt_off0000d7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A8 9860 bytes
SHA-256: c2e2ea2d7108a18ba9d59923e3789696818dfad8e2dc01c002f7caae17fd524d

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