Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19c5f14daa592b4…

MALICIOUS

PDF

76.0 KB Created: 2021-02-20 10:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c64631a73a293ae4164ef14860ac8a63 SHA-1: f9b272f03c9bf04d619787bb93ff61b71947e231 SHA-256: f19c5f14daa592b42862e0594a26475b3fff373dcd1aae99be957f901df2a081
166 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://jottigo.ru/wix?keyword=dnx692+installation+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471234/normal_6001d501ac1c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473375/normal_5fda24082931b.pdfIn PDF document text
    • http://umkatrade.ru/manual_compressor_schulz_50_litrosfcdz3.pdfIn PDF document text
    • https://cdn.sqhk.co/kulukopupiw/htGifyM/4247577027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_600e4c88d32b5.pdfIn PDF document text
    • http://triple-doska3.club/apache_tomcat_9._0._10y6iz.pdfIn PDF document text
    • http://gamedv.design/cancer_de_pulmon_radiografiae2s5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380073/normal_5ffb338909b14.pdfIn PDF document text
    • http://kapewodepobigab.22web.org/internet_of_things_and_its_applications.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403938/normal_6016f54c5b020.pdfIn PDF document text
    • http://tehnoprom.org/xebimewumutolo5ujo9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fetufebutegiv.rf.gd/new_delhi_railway_station_platform_no_3.pdfIn PDF document text
    • http://siparedobapu.rf.gd/39165144172.pdfIn PDF document text
    • http://wizajevul.epizy.com/ema_gmp_inspection_report_template.pdfIn PDF document text
    • http://panadokopejed.epizy.com/ganipugevelixezudetiwu.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_off0000ee96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE96 5244 bytes
SHA-256: a2e9f9d0901b9688b857c1e47637f1829ce5e28f40b2aabd2b74f304ace6937a
font_01_sfnt_off00010063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10063 10308 bytes
SHA-256: 4d3c288ca16808456ad19478965d0f9b643397b9d12ac934468381238da4bb1e