Malicious PDF — malware analysis report

Static analysis result for SHA-256 e99753d339a43190…

MALICIOUS

PDF

90.2 KB Created: 2021-02-17 12:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b81a5b7a0681cd5e6a13aca5daf56540 SHA-1: 24dae3fcc4f48f06ff05ad7689397d9cd2f4e7c9 SHA-256: e99753d339a43190a5025d40baedf7e658806af1b27d10cfa5a747820370ecf8
144 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wb?keyword=campark%20trail%20camera%20review PDF link annotation
    • http://triple-doska1.club/flask_login_current_user_templatege2xa.pdfIn PDF document text
    • http://photoforce.ru/varutosazilaxazigutedzzbol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bapexuzajo.epizy.com/linux_server_patching_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/chips_challenge_android_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/crack_nitro_pro_9_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/11852366677.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/forest_fire_news_report.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/20309967891.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/87442927912.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/file_from_sftp_server_using_vb._net.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/background_power_point_tema_islam.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/samajofuke.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/ingersoll_rand_air_compressor_troubleshooting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/72052438745.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/dinosaur_clothespin_puppet_template_free.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_off00012597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12597 5024 bytes
SHA-256: 3c05ed6f25696a0e23b40c44279b3629cca0f248282891f0150b3cc7f277d203
font_01_sfnt_off000136a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136A7 10688 bytes
SHA-256: 24e440f34670ebf04a1e718a379bbef16825a643c923eeebd56a8b681b849a90