Malicious PDF — malware analysis report

Static analysis result for SHA-256 815e6adc0ac1b195…

MALICIOUS

PDF

74.9 KB Created: 2021-02-25 13:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 893bc28c78b9f9789113528922d13746 SHA-1: 7ab0206736310fb7b50d6e9e62329590e787f937 SHA-256: 815e6adc0ac1b195e1a7ee55aa8a768d1d19e84f999d70720f6fdd29ec25fad7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/123?utm_term=does+keurig+hot+chocolate+have+sugar PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393515/normal_602839223503c.pdfIn PDF document text
    • https://cdn.sqhk.co/waladoved/qfpImje/ultimate_car_sim_ultimate_car_driving_simulator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5fee9b783846a.pdfIn PDF document text
    • http://vuxuxabuj.iblogger.org/cross_check_two_excel_spreadsheets.pdfIn PDF document text
    • https://cdn.sqhk.co/resozasevej/WggFgi9/okay_boomer_meme_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378853/normal_5fef02d6609ae.pdfIn PDF document text
    • https://kaxaxelakag.weebly.com/uploads/1/3/4/2/134235500/posibuvawezo-vewitetafimum.pdfIn PDF document text
    • https://cdn.sqhk.co/kigifadarija/ghdEHjf/sago_mini_fairy_tales.pdfIn PDF document text
    • https://tevunuxewime.weebly.com/uploads/1/3/1/4/131452804/ziwikuvod.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/2e285ebc4.pdfIn PDF document text
    • https://cdn.sqhk.co/podiwilur/hcwsLS8/90106638736.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://reduxaxu.epizy.com/lerixarepenebojogitugud.pdfIn PDF document text
    • http://gawuvuv.epizy.com/adina_forgive_video.pdfIn PDF document text
    • http://xedotowatanulew.rf.gd/96268673173.pdfIn PDF document text
    • http://kikexufan.epizy.com/32168343737.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_off0000e4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5184 bytes
SHA-256: fa8c0cc52355d66185088c2e3d77e9625f6b0c879bc4b89672d90058c0ec7491
font_01_sfnt_off0000f678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF678 11716 bytes
SHA-256: a981ac9636e70c788b24b8e4c89824a74bb304c054c5eeb006d7aa2b1ba76bb1