Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cba39bad2b3645d…

MALICIOUS

PDF

71.8 KB Created: 2021-02-24 23:37:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 99a0c597ce1cfd391b14184c22ed7e3a SHA-1: a3e290e1493ceb0341f6ad7c60168a16353ba200 SHA-256: 0cba39bad2b3645d41c60164e5f249bd0ec4fa828cd8171a4240358d10205ba7
126 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
  • 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://bologen.ru/award?keyword=how+to+read+lexicon+ethics+for+upsc PDF link annotation
    • http://goledipe.22web.org/tamasha_movie_tamilrockers.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/djjHSOt/33343008916.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/jhcXgdP/find_friends_app_disappeared.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemenivu/mijhblo/xopevijuwovimumujewi.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/the_merry_adventures_of_robin_hood_chapter_4_summary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418167/normal_5fe274a366603.pdfIn PDF document text
    • http://jotewelife.iblogger.org/image_registration_matlab_code.pdfIn PDF document text
    • http://taxilozevuj.iblogger.org/author_s_purpose_worksheets_middle_school.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/15531535294.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/iajdOgd/61830073242.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/11399059215.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://temitugefowe.epizy.com/curriculum_vitae_template_word_online.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/pugeko.pdfIn PDF document text
    • http://dufakukin.rf.gd/best_photoshop_books_for_beginners.pdfIn PDF document text
    • http://zoribele.epizy.com/55352686857.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_off0000db52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB52 5364 bytes
SHA-256: d744e1a86b25a4163cebfd5c5272f35827c8ee9b9c8e3eeeaff7104280e8eb4e
font_01_sfnt_off0000ed9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9F 10740 bytes
SHA-256: 27fcd976296a767d35aff4fcab7c7242d9227d9ea09c35eb194c58d7b2860cd9