Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d08c94225222beb…

MALICIOUS

PDF

75.5 KB Created: 2021-03-01 14:49:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0787e90cdcbbf7c75acd2d42580da058 SHA-1: 5859a4dd8c5c0792fb44613c3ab694cce35e9fe9 SHA-256: 1d08c94225222beb14479a8d91d5ccc6ff988ebdd0e3ed67240b621bf85dbd41
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=english+bad+words+with+meaning+in+gujarati In PDF document text
    • https://cdn.sqhk.co/xunijejozi/jcgexwz/money_maker_3d_print_cash_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479214/normal_601fdb96c3e81.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/vGghSAk/1000_words_is_how_many_pages.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495039/normal_6014165553c6e.pdfIn PDF document text
    • http://nufurimuler.iblogger.org/noziziwadimugal.pdfIn PDF document text
    • https://cdn.sqhk.co/sazobenapur/eOlOtgf/block_craft_3d_hack_apk_gemas_infinitas_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/luvafuza/RT1jaHY/700_espn_radio_spokane.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/juUNgja/wulapupo.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/hjsZ1YW/space_jam_11_2009.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/xhhggig/la_sportiva_climbing_trail_running.pdfIn PDF document text
    • https://cdn.sqhk.co/xaleteser/pZMQvhe/slicer_machine_for_home.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/xMYjaCl/gs_race_skis_for_sale.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/xozeb/basic_civil_engineering_books_in_tamil.pdfIn PDF document text
    • http://botamokawafaj.epizy.com/stats_modeling_the_world_ap_4th_edition.pdfIn PDF document text
    • http://moniladipawi.epizy.com/88472216324.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_off0000e99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99D 5504 bytes
SHA-256: 23ad7e0b4be734cbc50083e9cbacd53f7c7e1bb28c91cef555ecffbf0d475af3
font_01_sfnt_off0000fc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3F 10756 bytes
SHA-256: e23b817f083d6740fca4b7d730d95e8852b617d9ff04c65035f97c7afa716b6b