Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2efb106d316968…

MALICIOUS

PDF

63.1 KB Created: 2021-02-21 09:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a36213e044ba0f0d86fa2ef9c5d713e3 SHA-1: 8d76ccd8c0216d575a0f7f81a194a72455ddfeea SHA-256: 7f2efb106d31696897d99f3cbff699a2df075c63f62cf99c22d1d260459b1557
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://jottigo.ru/wix?keyword=spanish+tener+que+infinitive+quiz PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403822/normal_60139935ef44a.pdfIn PDF document text
    • https://cdn.sqhk.co/bimowikosaru/ghRhiql/strategy_consulting_salary_progression_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/bgdN0aW/super_wings_character_who_istanbul.pdfIn PDF document text
    • https://cdn.sqhk.co/gixixutiji/hihibia/tripadvisor_best_travel_guide_book_for_barcelona.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_6030a6868a051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_602d961e642d7.pdfIn PDF document text
    • https://cdn.sqhk.co/zoturisa/hbjie4c/30327782525.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/8Mmojea/english_story_books_to_read_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419644/normal_600fe3383d1fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371013/normal_5ffb14452cd54.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/iUkgc3I/4x4_suv_off_road_extreme_jeep_game_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tidelefuzin/sfhbTjc/22157874449.pdfIn PDF document text
    • https://cdn.sqhk.co/sisamide/h5uzjcx/image_editor_app_iphone.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/vufuzewasi/94176866387.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/23070740690.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/34317427070.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/translation_rotation_reflection_worksheet_10th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/2_player_games_for_android_bluetooth.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_off0000bb8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8B 5296 bytes
SHA-256: bc21d360012651790c78e5c7e26967347ff1988bd79df6bbdf8e69b96f03eb7d
font_01_sfnt_off0000cd9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9F 9852 bytes
SHA-256: 5ba2d6712d2fff5164dba85f19932ab037c8975216b7fb6e3389dfe30cca43e9