Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0409d1bb100e61…

MALICIOUS

PDF

73.0 KB Created: 2021-02-11 01:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3f19a22b95853bb505067fe0e2c0d12c SHA-1: 704e5136b4980795ebb84da016a8bf8eeb2e0c93 SHA-256: 7b0409d1bb100e61cfa60c6103fa0e2861637f2cfe114d8791df39bcf97d4768
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=apk+killer+download PDF link annotation
    • http://wide-do.top/shallow_cello_sheet_music_freegagq6.pdfIn PDF document text
    • http://kismyketio.com/marvel_rising_heart_of_ironpf308.pdfIn PDF document text
    • http://hookup754.fun/vaikom_muhammad_basheer_stories_in_malayalam_free_downloadk80xi.pdfIn PDF document text
    • https://cdn.sqhk.co/kufezagivori/5orNOha/dinaso.pdfIn PDF document text
    • http://inostrana.com/car_value_nada_guideipw8n.pdfIn PDF document text
    • http://dorightschool.com/bowflex_pr1000_exerciseso7lm7.pdfIn PDF document text
    • http://beststudent.space/7_minute_vocal_warm_up_pro_modk81un.pdfIn PDF document text
    • http://rkconstructionsucks.com/grim_dawn_kymons_chosenshg6g.pdfIn PDF document text
    • http://onesmall.space/2789717505ln4pm.pdfIn PDF document text
    • http://cocobuka3.xyz/posajijeabwn2.pdfIn PDF document text
    • http://tells.fun/50854350572050eb.pdfIn PDF document text
    • http://jnatural.space/38219172257cgk1v.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/topipovikapari/96046298773.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/ketopotituzamofafukidawij.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/dashboard_with_google_sheets.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_off0000ddaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAF 4920 bytes
SHA-256: 254dfeba5b7eccdb720102755eb3e2603fde8d5c1eb140a98396ebe49afc25da
font_01_sfnt_off0000ee8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8B 13340 bytes
SHA-256: 6d37c609a07d38cb002824442c691816ef172b6706ba3d46c56052124a07a489