Malicious PDF — malware analysis report

Static analysis result for SHA-256 f743b3144eb537db…

MALICIOUS

PDF

72.0 KB Created: 2021-03-02 19:12:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c79a362bc646cd7f9fce30f6bee27ad SHA-1: ed0d28d9c06d94a9e6202093e06b24f20833d8d3 SHA-256: f743b3144eb537db6d134369831a9ba673b95e50793f403e8694220887350e01
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/award?keyword=dungeons+and+dragons+full+movie+download+in+hindi PDF link annotation
    • https://cdn.sqhk.co/jodolupuvit/gjjbrVo/duligo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416512/normal_5ff6a5a1d13e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5fcf473cd42cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xilavivugup.epizy.com/28378911042.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/sound_energy_worksheets_2nd_grade.pdfIn PDF document text
    • http://jomezibu.epizy.com/simosulurusabunanepa.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/glacier_bay_toilet_dual_flush_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/android_games_hack_apk_website.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/affairs_cloud_current_affairs_monthly.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/80449588391.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/ranchi_university_marksheet_sample.pdfIn PDF document text
    • http://buzuxujov.epizy.com/mcgraw_hill_connect_business_law_answers.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_off0000dd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD91 5472 bytes
SHA-256: 8583d7168bb84db9561b3e93aa9d17a647723267925c5c5004255acac74ab5f9
font_01_sfnt_off0000f01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01D 10224 bytes
SHA-256: 7961a959d9079eb4bd9ae9ad09d2d5bedf82dbb61347442dd4f7f747cbb4a477