Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a688479c1d77081…

MALICIOUS

PDF

72.7 KB Created: 2021-02-17 11:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af72cdb12353462989f05b1fc9e1d859 SHA-1: 6b7112497aba92333cca72f08268307ffc388922 SHA-256: 8a688479c1d77081ab8e016574faa55678331dc0b9d537489d1e5dffc6cbcb68
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://seumenha.ru/wix?keyword=birth+certificate+corpus+christi+texas PDF link annotation
    • https://cdn.sqhk.co/zibomevuguli/fbciim0/duvodakotowaja.pdfIn PDF document text
    • http://paktum.pro/gebumapiziwujaguv73f8.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/cihNlgj/plants_vs_zombies_download_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/jiZlmqB/48287267209.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/ejaGsXq/police_walkie_talkie_ringtone_mp3_free_download.pdfIn PDF document text
    • http://prizyivnik.ru/bikefasad6r2qj.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/hdIFbic/ez_load_trailer_parts_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481828/normal_601c01d85e329.pdfIn PDF document text
    • http://ellmax-site.xyz/lesson_6._1_practice_b_geometry_answ25a48.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/kukupunopedon/composite_shapes_worksheet_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/sisiriridedenoluzara.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/48872593172.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/derubar.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/43122699389.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/8143789042.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/zakulawulifuzezafirinos.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/microsoft_chromium_browser.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/story_games_free.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/pasebofozadu.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_off0000df5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5C 5188 bytes
SHA-256: dcf20381b606370147fab8326d5ee0206e58dfec2b9cfc66a83b92d3645fd8d8
font_01_sfnt_off0000f10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10B 10704 bytes
SHA-256: 16bd9bfc28e4c4f528017f1b4f8e7b6dd37a0c0e2d7c97a759ba8bb7dc4e93e6