Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8bab71f9907855…

MALICIOUS

PDF

71.3 KB Created: 2021-02-18 00:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0a18ffab3c4e0de5624f6ca62047e4da SHA-1: d77177112c8fc4faa08a472215c4ccff5c0d23e1 SHA-256: ce8bab71f990785541f626d66a0df38cd7a0e352c918a1acff59345606d2bd38
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://bologen.ru/123?utm_term=what+is+the+best+mind+mapping+software+for+mac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5fd241861d309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380072/normal_6026faa49c62e.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/biaie2l/daily_checklist_excel.pdfIn PDF document text
    • http://roxifij.22web.org/jujizajezaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478422/normal_5fe2ab8d8acab.pdfIn PDF document text
    • http://wixiziz.iblogger.org/long_term_debt_effect_on_balance_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446924/normal_6011385d88018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387046/normal_601ed7ee0e8c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_60205cbd2ae82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456166/normal_602b254421d24.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/bejikefowu/18306084090.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/gopadiv.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/jukusozika.pdfIn PDF document text
    • http://gotenekopibijo.epizy.com/tuganudub.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/dosux.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_off0000d9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AA 5784 bytes
SHA-256: 252b6e79b5e7a3549bd27d370a25197eb766a673d853bd3266f550f7782aae4f
font_01_sfnt_off0000ed4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4A 10472 bytes
SHA-256: e2c1c9e8e656ed9768e502d10f7e18157a9ab1a591b239277f4f1639c4d08e5d