Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c02e9326ec00633…

MALICIOUS

PDF

67.0 KB Created: 2021-02-08 18:49:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 14f84ca8e7ab744dc4d78f0e54f5b68b SHA-1: e445be1adfaedd70659da2f1c1c1728fc5a4f203 SHA-256: 1c02e9326ec0063362a979f9d7adaf5f22c3a62c97f406e614b3dc5758bed7cc
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=chromecast%20extension%20for%20windows%207 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421366/normal_5ffcd745c2884.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/hjHjbjb/foxuge.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/jiECvMp/97545011713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424007/normal_600141feae27a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5fd7f251a09b6.pdfIn PDF document text
    • http://gufutaca6.xyz/44112167934k3hkt.pdfIn PDF document text
    • http://potaberukogox.66ghz.com/48962233132.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wadokeg.epizy.com/nepijolusojawapin.pdfIn PDF document text
    • http://sajipesexadagon.epizy.com/61548011070.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/daxosazeg.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/sopurugejesenexupop.pdfIn PDF document text
    • http://wowinagapujepok.epizy.com/62795323927.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/gajotowudutumetij.pdfIn PDF document text
    • http://zoponoz.epizy.com/30498642841.pdfIn PDF document text
    • http://mirajiletumumi.epizy.com/prezi_template_free_cinema.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_off0000c683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC683 5376 bytes
SHA-256: 57286fb9e5a494ec7b97a742fe8ffe6e2c121a53c2fde39acca563f989bd790c
font_01_sfnt_off0000d8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B6 11172 bytes
SHA-256: 9cdd5e78a77f2515a457847054414c706de450ea7d015793fb66688b26f77e42