Malicious PDF — malware analysis report

Static analysis result for SHA-256 768e43d6dfb6a305…

MALICIOUS

PDF

71.1 KB Created: 2021-01-27 00:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 72be362171ebd70bd6121ad8a584bae5 SHA-1: 840dea931f4dffa4ff5dd0dca12e361a6db0758d SHA-256: 768e43d6dfb6a30579974f744ad1dcaa8d287c694946557e397ac7591e14f5e4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=medical+math+conversion+chart PDF link annotation
    • https://cdn.sqhk.co/dixejetafap/LBig996/strike_fighters_attack_pro_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nemizuxe/fov90xe/beyblade_burst_app_codes_god.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/suzujewa/86669785530.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/rocktron_banshee_2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/42088485879.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/cheppave_chirugali_telugu_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/78571142511.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/budget_and_budgetary_control_mba_project.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/adnan_ma_hada_deweni_inima_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/81732609397.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/pugutejibolivotadiwuxok.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/beboguje.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/free_access_2016_database_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/unir_dos_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/can_seamer_machine.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_off0000d824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD824 5244 bytes
SHA-256: ee36b1e781a669b2759124e6f676dd86e938b3264d729f6bdce65e2e4dbeea5d
font_01_sfnt_off0000e9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DC 11096 bytes
SHA-256: 846f55c321c286d56e6b56129a2003ccf17a23f8fe6e11840ce52b0780549916