Malicious PDF — malware analysis report

Static analysis result for SHA-256 4028647dae55c2ce…

MALICIOUS

PDF

79.2 KB Created: 2021-03-03 11:58:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 465ca1f92294a2892fa2570013a61975 SHA-1: 0535b89bf8311021de62e9425e0624768f7fee45 SHA-256: 4028647dae55c2cea44eddb784863774237db76d1dfd2bb333d04a126160f296
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://maypoin.ru/award?keyword=on+the+banks+of+plum+creek+free+pdf+download PDF link annotation
    • http://agentsecure.space/vukosomisenebogitekewopihppdg.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/iejatZF/atomus_hd_apk_revdl.pdfIn PDF document text
    • http://wimuzawoxi.getenjoyment.net/xaxamefubijuzogixuro.pdfIn PDF document text
    • https://cdn.sqhk.co/kisunika/iWhcIeS/2.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/gr92Ooa/thorogood_boots_1892_beloit.pdfIn PDF document text
    • http://hangookoil.ru/379267399417k3u7.pdfIn PDF document text
    • http://lagulesuko.medianewsonline.com/nomowakarudokelatoz.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/sekaxobugeju.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/ZdHijrs/wivekagas.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/fLPhiv4/zikiruparupomeratiwiwupi.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/6382113429.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/fejenijovekozu/wezekotuxin.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/52903437948.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/free_business_travel_itinerary_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/44974772462.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/luxusaxikikazezil.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/56763157044.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/anime_slayer_apk_latest_version_2019.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_off0000f6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DF 5716 bytes
SHA-256: 51cd8332e8ecc895b373d541e7866135ae1cc2dd669593ab904bad58d5e057cc
font_01_sfnt_off00010a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A39 11388 bytes
SHA-256: 3a93ce001e940faf2067b0bc487f89472264e97a39ce056e957144b167bdb4c3

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