Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbb43a1a11b6fcc…

MALICIOUS

PDF

62.4 KB Created: 2021-02-20 07:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: da3c5185e3050c5add6077030090a67a SHA-1: ca105813a614fbd04dcf0466403679846b4137c4 SHA-256: 2dbb43a1a11b6fcc39ce0f6179fc9979c52af896b440efb91fe3dad439a1fe6f
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://jottigo.ru/wix?keyword=backpack+literature+5th+edition+pdf+download PDF link annotation
    • https://cdn.sqhk.co/nizekidido/0jieheH/fire_red_flying_type_pokemon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451220/normal_602fb8b3548df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375884/normal_6001136a6aec3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486051/normal_5fe32e858e948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_5fd62250a8ee8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_600b691ba1892.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/ichfgiH/colorado_switchbacks_tryouts_2021.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475376/normal_603032bccc141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_6027886ca6a78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_5fe9bf31603b9.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/chi6icf/pottery_artists_modern.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_6027e0ac387bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426408/normal_6003ecf07c396.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417226/normal_5fe5901cca27d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5fe425883e746.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_602bdad3dfe64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413346/normal_5ff8672f8e6ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386851/normal_6003f2ea88135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_601d0503efb94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450040/normal_5fc9ed340d61c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C9 5392 bytes
SHA-256: 41e1d36d1a0a1d7d84886d2739db0faa30eba095a5ce222ac4b8f7b41884f069
font_01_sfnt_off0000ca39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA39 9928 bytes
SHA-256: 747b5e7807cab251d4632d6cfef5965b67e1aea6787ed5d3c6586a967ec934bf

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