Malicious PDF — malware analysis report

Static analysis result for SHA-256 b723eaaf0a3948b2…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 05:02:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 95921a3b97549a24ab7e405d719704ae SHA-1: 301325e71d6f0df22096ec72d63d607480c16a1f SHA-256: b723eaaf0a3948b22be0916c3bb2759f598a0078b79917aef9a0346f284fe7ff
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://maypoin.ru/wix?keyword=speed+vs+time+graph+worksheet+pdf PDF link annotation
    • http://load-bcp.com/janinunamirafdulr.pdfIn PDF document text
    • http://complerbnp.com/lekewiwimikavap95dqk.pdfIn PDF document text
    • http://hiziryigit.online/2195153616520wi3.pdfIn PDF document text
    • http://chestlune.online/kurebodebajwt8ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_5fe927af0181e.pdfIn PDF document text
    • http://microdigitalmeter.xyz/sainsmart_arduino_starter_kit_tutorialxvdi7.pdfIn PDF document text
    • http://bupro.asia/non_defining_relative_clause_exercisesalrw2.pdfIn PDF document text
    • https://cdn.sqhk.co/sategexarom/egjgja4/3d_galaxy_live_wallpaper_hd_love.pdfIn PDF document text
    • http://lighttravel-ng.com/26908953919ieerf.pdfIn PDF document text
    • http://hookup754.fun/knight_chronicle_guide_rune94hty.pdfIn PDF document text
    • http://wide-take.top/romantic_kiss_status_video_for_whatsapp_download_freeyu8yq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498834/normal_5fec3ac75ad7f.pdfIn PDF document text
    • http://onlinetyz.xyz/juwufidugey3s7x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/25641560512.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/bahtsul_masail.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_off0000dff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF8 5744 bytes
SHA-256: af333e40f7bdbff48f8d0537d363c364edb8751ab8795cc094951d9701681dfb
font_01_sfnt_off0000f367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF367 10080 bytes
SHA-256: 1c03cd18be7bda10dee53e93672354fcb4d3fc340ad63eb57fefccbf390403d0