Malicious PDF — malware analysis report

Static analysis result for SHA-256 665f3814f19d9722…

MALICIOUS

PDF

71.8 KB Created: 2020-12-23 10:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c124deabef99b795dc57d6a926e73fea SHA-1: 3b39a313147f61725fe31407ea0e4075645037c2 SHA-256: 665f3814f19d9722fc314c47850b5b7be11ca3db69cdca15eddafe0cbc512892
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/wb?keyword=only%20one%20kanye%20west%20audio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386347/normal_5f8f374ce1e8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5fc0ed07439f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_5fce4cd3f2df7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5696860f2895dc1061537/t/5fd160d77c12252903e61747/1607557335963/27105901108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b530a9-6b87-4a0d-9214-0f4ac16580ac/lemiloxusiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9961e2dd-4648-4fe6-9233-99995dbccede/befakulazanarezonufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b14ea9-af14-4c09-b7a4-e7bd46ef1367/25836854047.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/77190789514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de492813-b069-4f1e-bc1c-0df57b5bb052/xawejujenuxixetupumok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a35c8bd6-f05e-4a28-bd1c-f80a4641a501/kingroot_apk_chromebook.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a81ee5c7695ca9a6fa19/t/5fd0053bd44b387c70f26350/1607468348012/42924292954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5bec125-cfd1-4c28-9bad-d81188b17ccf/the_art_of_strategy_a_game_theorists_guide_to_success_in_business_and_life_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b917c2b-0039-46e5-bf48-09cb13a60722/11276867800.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/zitorurilizogepasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5958adde-d1e8-4ffb-9e67-4281e890736f/zinulubuvujuxukitusom.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_off0000d824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD824 5008 bytes
SHA-256: 9054fbb169ad90f759a565edd34a8f89febbbf0003f20ea41c19074ad227c587
font_01_sfnt_off0000e957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE957 12600 bytes
SHA-256: 24796e6a8845a7edb7e2a9d99e603b8a9e45d11fcfa1a6afd439614fad284678

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