Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd5e9669d9de2d3…

MALICIOUS

PDF

73.2 KB Created: 2021-01-20 06:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b63a3bd6bac4ca73143773b695ac0342 SHA-1: 0e4b6b9dd10e75708b69192d8d728d6aad1172d2 SHA-256: 7fd5e9669d9de2d3d6cf4cac62d9dd34fa76a1426ec3bd49c24bd152a2e7e31b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/wb?keyword=video%20player%20banner%20gif PDF link annotation
    • https://cdn.sqhk.co/notigagamu/VggjbtF/tasub.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/ejhTmhh/13987005757.pdfIn PDF document text
    • https://cdn.sqhk.co/rewaloxuruvu/43t1BfT/rubarukasalefino.pdfIn PDF document text
    • https://site-1166605.mozfiles.com/files/1166605/tijufuwi.pdfIn PDF document text
    • http://rolevuses.iblogger.org/oracle_database_development_guide_12c.pdfIn PDF document text
    • https://site-1172364.mozfiles.com/files/1172364/vubavit.pdfIn PDF document text
    • https://site-1197505.mozfiles.com/files/1197505/fedugomujizon.pdfIn PDF document text
    • https://site-1175554.mozfiles.com/files/1175554/commando_2_movie_hd_in_tamil.pdfIn PDF document text
    • https://site-1254036.mozfiles.com/files/1254036/vukebu.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/dieWie8/34551025678.pdfIn PDF document text
    • http://madusotiju.22web.org/17138246407.pdfIn PDF document text
    • https://site-1174993.mozfiles.com/files/1174993/black_ops_cold_war_warzone_release_date.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://livukuxuperum.epizy.com/rch_guidelines_congenital_hip_dysplasia.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/zejawal.pdfIn PDF document text
    • http://vubixegigag.rf.gd/journalism_job_interview_questions_and_answers.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_off0000e0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E2 5236 bytes
SHA-256: 064b30f028a646bbef40665d44ecabe790ae9ca64453ddc455c241834872e212
font_01_sfnt_off0000f2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CD 11060 bytes
SHA-256: 1332214d63e56f5696efbb9ac1d6984933fc54f015568cdd68358e245b412048