Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf3802313127a22…

MALICIOUS

PDF

75.5 KB Created: 2021-02-12 01:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 155cb8437e707e0c5003e61f2c46c523 SHA-1: d247504801a1912b3a0ae267004c02a3e3c5cbbb SHA-256: faf3802313127a225c2b18dd852427c21de1111df10f54ca23648a1216506692
126 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
  • 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://druttle.ru/wb?keyword=idsa%20hap%20guidelines%202016 PDF link annotation
    • https://cdn.sqhk.co/vifaduvej/hhjfRhf/android_chrome_browser_video_downloader_extension.pdfIn PDF document text
    • http://alsamcctv.com/linear_equations_word_problems_workszo1sn.pdfIn PDF document text
    • https://cdn.sqhk.co/nazalugewu/ij6Y0if/73112148190.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409811/normal_5fde303207c49.pdfIn PDF document text
    • http://zemegazi.22web.org/30059710339.pdfIn PDF document text
    • http://austritkfa.com/9115446550389f1s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457272/normal_5feb8e5ea5852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5fd2a7eaf0e85.pdfIn PDF document text
    • http://kimelaxuwivupa.iblogger.org/85258950823.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/Zhhhche/phoenix_wright_games_timeline.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420934/normal_5fdd872eaaa11.pdfIn PDF document text
    • http://help-copyrightservice.xyz/social_innovation_definitionzs37i.pdfIn PDF document text
    • http://lovechat24.club/23067282735ljuo8.pdfIn PDF document text
    • https://bewanabexujafo.weebly.com/uploads/1/3/6/0/136050633/danabojaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vasinazovuxe.rf.gd/convection_currents_plate_tectonics_worksheet.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_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 5540 bytes
SHA-256: 81feaaa1448dee1ff7e82a8f21c00275bd03bdcc648b78ff1e71bde49fb9ca75
font_01_sfnt_off0000fae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE0 11320 bytes
SHA-256: d82840d0bd403b4472050a6356a759facaf2777ff49754a2e85d8e99f616fee1