Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6885b69036a4c8…

MALICIOUS

PDF

71.2 KB Created: 2021-02-20 03:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0de6556c737394aa8fa616eba21de63f SHA-1: 64ef84c7bd4b8bc9e173d594e4ad5200d359fa44 SHA-256: 0c6885b69036a4c81ce0f081b3984dabb843ea92f20bbccbd16354c6e6ce729c
184 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
  • 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://yafferge.ru/wix?keyword=using+google+sites+for+intranet In PDF document text
    • http://jumpfs.space/offline_battle_royale_games_apk0kn0j.pdfIn PDF document text
    • https://tenipimip.weebly.com/uploads/1/3/4/0/134042327/fasamebamuravi.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/cXgfHm9/stickers_among_us_whatsapp.pdfIn PDF document text
    • https://lameperitilexi.weebly.com/uploads/1/3/1/1/131164355/suxugox.pdfIn PDF document text
    • http://gbo.guru/android_callback_interface787kv.pdfIn PDF document text
    • http://sodaapp.club/letter_of_invitation_to_visit_usa_template1w2sy.pdfIn PDF document text
    • http://auto-fishing-rods1.club/bosofumazujebutogimjpo0p.pdfIn PDF document text
    • https://cdn.sqhk.co/tudosiki/RKhggja/rezudafe.pdfIn PDF document text
    • https://fozuxuvaporoj.weebly.com/uploads/1/3/1/8/131856883/7837886.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/ajdlija/mowonemexoditimud.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/nisiwanolom/jowoki.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/24055159159.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/marvel_future_fight_reddit_beginners_guide.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_off0000dfa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA2 4928 bytes
SHA-256: 382437397c0ba515ad3e34a9ac519b697acdb4768b64f14b1a207bd754fa5a60
font_01_sfnt_off0000f076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF076 9340 bytes
SHA-256: 6c6fba894115d4e5a02d0f59f350cbbe21d2bf7e19a00fe278aac477ad40ada9