Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffffecf45ea54a13…

MALICIOUS

PDF

69.9 KB Created: 2021-02-15 01:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7c12eae134181271e1101b5dd0fd9aac SHA-1: 3e71b68184b304a374212f05d47e6e7be40d8721 SHA-256: ffffecf45ea54a134d1221cce9220e219f07d7741d764e8fcbd5a22e358104b1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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/aws?utm_term=iso+9001+bureau+veritas+logo PDF link annotation
    • https://cdn.sqhk.co/dakuwuwuzije/fojdhai/the_warriors_game_ps4_multiplayer.pdfIn PDF document text
    • http://ch-redirect.icu/29194627008kd26j.pdfIn PDF document text
    • https://jotabaputeja.weebly.com/uploads/1/3/5/3/135350690/fosekarukup_nefakakufex.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/SYijRH9/gmail_app_for_windows_desktop.pdfIn PDF document text
    • http://smallita.space/focus_on_nursing_pharmacology_8th_ed5emfx.pdfIn PDF document text
    • https://cdn.sqhk.co/zonumofil/dFm35gg/gupotigagiris.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5fd3dced976ed.pdfIn PDF document text
    • http://meetraisins.club/rulowojukztvr.pdfIn PDF document text
    • https://cdn.sqhk.co/dimumaneda/cmNjcJU/davimuzani.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/lghjeje/5354348458.pdfIn PDF document text
    • http://barbanapoli.moscow/7648580888ktdhp.pdfIn PDF document text
    • http://discovljzg.fun/11796264244zacw7.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/ijjiigl/free_slots_vegas_world.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/mipeboro/wukevafumusufewavudum.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/barmeno_bold_normal.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_off0000d2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B3 5340 bytes
SHA-256: 7df960104ce4ef832cb17af1aea211bb0e470e272172b41d4914a6fa20dbe87e
font_01_sfnt_off0000e4f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F4 10824 bytes
SHA-256: c6f046fd2a855d8503c8e6b93cadf72bf16075aaba5e3bab93f0ea0240f7b96e