Malicious PDF — malware analysis report

Static analysis result for SHA-256 8acc1d739ca536f9…

MALICIOUS

PDF

39.7 KB Created: 2020-10-04 13:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 364b11aa4a3da2daa54b05e01d0ac719 SHA-1: 62040503c7294144dd0783ee5a1b18373ca5f8ff SHA-256: 8acc1d739ca536f998ac3a2ac66af7514e19dfad51f8ab5a39291cc28baedb9c
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://cctraff.ru/pify?keyword=corsair+commander+pro+manual In PDF document text
    • http://rofope.springgardens11.com/uploads/1/3/1/8/131856372/sutakedikudu-topurisekigetad-sesoke.pdfIn PDF document text
    • http://wurazibe.walkersvillehistoricalsociety.org/uploads/1/3/1/3/131383329/retafazakali.pdfIn PDF document text
    • http://files.agile-dork.com/uploads/1/3/2/8/132815298/zogidazasefezor.pdfIn PDF document text
    • http://files.mindfulstrides.org/uploads/1/3/1/6/131607943/jojiziv.pdfIn PDF document text
    • http://pilon.petfirstwalkersnsitters.com/uploads/1/3/1/4/131438873/jelukugojijuxa.pdfIn PDF document text
    • https://site-1041583.mozfiles.com/files/1041583/tuvunubegasaxepixodugemi.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/digavinamajirodoruxo.pdfIn PDF document text
    • http://wopebegug.crushcop.com.au/uploads/1/3/0/8/130873826/tevelazedadovew_nexagamabezox_boxeporu.pdfIn PDF document text
    • http://files.worthyfood.net/uploads/1/3/2/7/132740350/nepuzifefir-melij-bezefimodox-sibojibakinub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0e0b792-44d5-45f1-9842-db292f131b7e/jirafadijom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/248e3701-8dc2-4867-837d-b25df670b4e3/vosivukuzeda.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_off00005f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3F 5124 bytes
SHA-256: 54e31c74a808c07324ae29693989a4440557a4e3d74049b79774e5f50f78e3d5
font_01_sfnt_off0000708a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 10088 bytes
SHA-256: e93504a12cca35c2164d9c3af18b58f8ec6fde746d77f0c574637ab84b6a035e