Malicious PDF — malware analysis report

Static analysis result for SHA-256 8520eaa3a3bbecb2…

MALICIOUS

PDF

72.3 KB Created: 2021-02-20 09:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 78d1870e3a67c73471f146cd5dc5e819 SHA-1: 6cc7496f6e4fd347b7c5608a3fcbdd9d7a0aba83 SHA-256: 8520eaa3a3bbecb276aa3ffbf3085dfc25527f4f7a409fa5fd41e0bd7025dd9f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://bologen.ru/wix?keyword=career+fitness+program+11th+edition PDF link annotation
    • https://kizevopizimi.weebly.com/uploads/1/3/5/3/135351298/gojevomi.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/MiUiaii/leatherman_signal_vs_wave.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/Ezghlha/recipe_icing_cake.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/hcJ4ii2/filling_deep_holes_in_plaster_walls.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuwaxisiw/cfqD4gg/262449537.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/nghrhek/gigalife_app_promo.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/gu9gegj/bridge_constructor_playground.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kanomovezizof.epizy.com/69810130817.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/greystones_food_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/dokikig.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/64471635955.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/robunavufodozit.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/xewigomesojekareb.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/35573852516.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/california_king_sheet_sets_1000_thread_count.pdfIn PDF document text
    • http://wekameti.rf.gd/4879718781.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF72 5288 bytes
SHA-256: a600a987b1f9d6c5badcc81bad9d82a38d7dbcb6c7845bff76e91a449a158b37
font_01_sfnt_off0000e141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE141 10748 bytes
SHA-256: 2b40476ba58a8e9a2982d5c541de62f50319eff7720c7555c1929543b3cce2a8
font_02_sfnt_off000105f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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