Malicious PDF — malware analysis report

Static analysis result for SHA-256 f53ce9584d6fcf85…

MALICIOUS

PDF

70.9 KB Created: 2021-02-13 13:56:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 79f19c66464226be5aa5f152dafed768 SHA-1: 4b17cf612cb5096913596142f7fe4dab38da8b8e SHA-256: f53ce9584d6fcf85243fe6ee8912a84fdfb6fe92f9c2a66ddae0a0993f8ab654
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=adhurs%20movie%20hd%20video%20songs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496607/normal_601b50f8d6c76.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/yjjhjif/best_assistant_for_android_phone.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/wexoteluwag/jutewovijujarinu.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/giwepoletevezulolokox.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/85506827629.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/constraint_guideline_percent.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/kadififadatojavade.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/financial_calculator_mac.pdfIn PDF document text
    • http://guvamimifufirar.rf.gd/catholic_rosary_prayers.pdfIn PDF document text
    • http://jujabezemaluwe.rf.gd/fojaneralikebig.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/wigimarejiwazexixutobibe.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/hierophant_confidant_guide_persona_5.pdfIn PDF document text
    • http://julifoz.epizy.com/getibafobera.pdfIn PDF document text
    • http://bunakakivukutus.epizy.com/flow_chart_template_excel_2011.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/voxuzipu.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_off0000d9d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D9 5044 bytes
SHA-256: ffe8108ef1d437398268fb79f4552877c33c2f3be6343cb92fbc10d839695dbf
font_01_sfnt_off0000eada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADA 10536 bytes
SHA-256: e4f70cb733e518518e786103350ad4fd756fd772df23ee189c48b92f8a734bbe

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