Malicious PDF — malware analysis report

Static analysis result for SHA-256 4133bb824738e5d1…

MALICIOUS

PDF

75.0 KB Created: 2021-03-03 15:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b3d851c9cee305bee226bed861e67e88 SHA-1: 1993e9a2eff0a718c600a5eb44ea3f1cc57203ff SHA-256: 4133bb824738e5d1d295041e4aad80c3d5e12011ac52ea75466d59aeb8d398cb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://leonvi.ru/award?keyword=marine+corps+boot+camp+fitness+test PDF link annotation
    • http://pop-marketplace.ru/wiraburugagunanufegomaaai6.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/56268684947.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373986/normal_5ffc93978a7b7.pdfIn PDF document text
    • https://gazotudigexeb.weebly.com/uploads/1/3/1/1/131164446/2048881.pdfIn PDF document text
    • http://my-favshoph.online/tapuramifodubejejaggqyg.pdfIn PDF document text
    • http://inmyshtangen.xyz/12024336867b9rzt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463526/normal_6032a97a492fe.pdfIn PDF document text
    • http://vobuxunulorepi.22web.org/kugaratugitoluf.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/75389113170.pdfIn PDF document text
    • http://tavafotuzefox.sportsontheweb.net/zevagisi.pdfIn PDF document text
    • http://idealica-tufficiale.website/noropasovululuvenowozovpjg1p.pdfIn PDF document text
    • https://wurivebufe.weebly.com/uploads/1/3/0/8/130874680/mimewafi_fiduga_xanimotaviku_wafijavotafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494673/normal_601f13fc8a6e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xulivef.rf.gd/national_5_chemistry_calculation_questions_and_answers.pdfIn PDF document text
    • http://tositasi.epizy.com/autopsy_hollywood_movie.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/20751735204.pdfIn PDF document text
    • http://tijiwef.epizy.com/metabolisme_karbohidrat.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/how_do_you_report_levenes_test.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_off0000e75b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75B 5276 bytes
SHA-256: bdc2d51ca3ac8037c1a0511a89100a405c310a20ea036864a22e4d6ec09ffeba
font_01_sfnt_off0000f93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93D 10612 bytes
SHA-256: c84f3cb6072a47d8ce63e040c780a458cad7aa75283d32c67f2611a8c1f32e4c