Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff54f2574efcc70…

MALICIOUS

PDF

71.4 KB Created: 2021-02-12 12:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a8a80c537bf651dae15023cbbba81391 SHA-1: a884bcfb8d8093e53b5c2bed52c7ad2a048403b2 SHA-256: 9ff54f2574efcc706cac6a956c91f7cb12b3255cdfc68fbba47a3823bbfc4f03
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/wb?keyword=nombre%20rationnel%20et%20irrationnel%20exercice%20pdf In PDF document text
    • http://meduduwaje.22web.org/android_auto_day_night_mode.pdfIn PDF document text
    • http://sportplays.ru/xanafeluvewifazozebenureblo8mb.pdfIn PDF document text
    • http://airet.space/house_painter_las_vegas_reviewshxd4c.pdfIn PDF document text
    • http://tadenexibegujam.22web.org/badavobenuno.pdfIn PDF document text
    • http://brumbum3.xyz/17379483071nqpr0.pdfIn PDF document text
    • http://itclick.pro/597862832516lxuy.pdfIn PDF document text
    • http://top-salez.site/elevator_planning_guide_otis276i8.pdfIn PDF document text
    • http://probmake12.xyz/19693229142rxw77.pdfIn PDF document text
    • http://afracheat2.xyz/810230684241wcq5.pdfIn PDF document text
    • http://wdd13.ru/xiwapagaritajodupevizeh4u87.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/warapagefasovi/adobe_premiere_pro_free_text_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/2005658767.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/industry_canada_corporations_forms.pdfIn PDF document text
    • http://nekogepi.epizy.com/excel_hourly_gantt_chart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/50932956706.pdfIn PDF document text
    • http://lepoxas.rf.gd/53206401284.pdfIn PDF document text
    • http://zatojigetafugud.epizy.com/4942880619.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/icaap_report_uk.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_off0000d5f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F4 5300 bytes
SHA-256: 9796e1879ff2262b05639cdbc31bba996e196d8c3ff7a54a861d0f88f1df24b9
font_01_sfnt_off0000e7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E8 12144 bytes
SHA-256: 891f107974f34e497f64eef138834822f40627d6d49610a43b53076a0a95c1fc