Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf03b740f044cd1…

MALICIOUS

PDF

67.7 KB Created: 2021-02-21 11:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fe580cf186c5897f3114d94308022ae3 SHA-1: 698ed18956bdc922df68b9bf3cf02d07a87beff9 SHA-256: 2cf03b740f044cd17db706d03a41b97030778fb5f47c5d819d8b5f7d7d633e98
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://crophysi.ru/wix?keyword=guide+gear+deluxe+teepee+tent+14%2527+x+14%2527 In PDF document text
    • http://9gusevshop.website/kinalenojipometawugud94wi2.pdfIn PDF document text
    • https://cdn.sqhk.co/bibilofefi/t7WhhA1/35250763271.pdfIn PDF document text
    • http://interstart.online/all_different_landforms6ncv0.pdfIn PDF document text
    • https://cdn.sqhk.co/foletesubuf/mjcgiid/chop_chop_fruit_one_piece_legendary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_6028fb62dc3dd.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/dhBhaib/81080644648.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/daweguwuleavk96.pdfIn PDF document text
    • http://abwaab.su/428614746655m6h4.pdfIn PDF document text
    • http://lisolu.org/nepaxejeponiriwipopajomtqq7j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406481/normal_602468b714e55.pdfIn PDF document text
    • http://velesvoyage.ru/functionalism_william_james7tfjo.pdfIn PDF document text
    • http://buylettersonline.com/bluebook_cite_government_reportz2u9q.pdfIn PDF document text
    • http://creamspait.xyz/nordictrack_c2255_partsav549.pdfIn PDF document text
    • http://kneeksi.ru/civilisation_6_starting_guidejwtfa.pdfIn PDF document text
    • http://armada.technology/xugezekujikudifobarepfo56l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugofabafomozo.epizy.com/94119209708.pdfIn PDF document text
    • http://nufufud.epizy.com/28371916749.pdfIn PDF document text
    • http://faxajipemafeb.epizy.com/53283382854.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_off0000cca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA5 5224 bytes
SHA-256: 565eba9e9c4db714f65b6550383305ce3ed325b69ef1a5e3d001c8776c86b99f
font_01_sfnt_off0000de91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE91 10236 bytes
SHA-256: 00172afb03948c14a375b7d5fbe6451d26f9b87fb752fb83b446a282b9028f88