Malicious PDF — malware analysis report

Static analysis result for SHA-256 174372c35833717d…

MALICIOUS

PDF

68.3 KB Created: 2021-02-26 23:26:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 128196d529d5beaa60884dad52c69a52 SHA-1: af511485f8a407652249d6d4866a7041e8433f89 SHA-256: 174372c35833717d9517aa4f0e89ba13ae7b7b8bd2090177e9edba0bf5754ccd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://resalured.ru/award?keyword=sas+sgplot+bar+chart+color PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409425/normal_5ff77ff81fa36.pdfIn PDF document text
    • https://dedemapisiwopiv.weebly.com/uploads/1/3/0/7/130775251/57aa4c.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/fgi1c5D/wituwixox.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/gjNSLGE/44288853793.pdfIn PDF document text
    • https://cdn.sqhk.co/pibusupi/eC5oibS/cinema_box_light_argos.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/telasebisu/biblia_de_estudio_el_expositor.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/ccna_1_chapter_4_answers_2019.pdfIn PDF document text
    • http://futikuzita.onlinewebshop.net/les_miserables_musical_cast_2020.pdfIn PDF document text
    • http://nozezuwaxufudeb.epizy.com/general_prescribing_guidelines_for_antibiotics.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_off0000cf12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF12 5436 bytes
SHA-256: 7e99147374575a2913a3d3248931f536e48a2e5ca187bf2fb7e2d4cfdd37a828
font_01_sfnt_off0000e181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE181 10424 bytes
SHA-256: 2ed2f9bb88e65a75aefc0b63fc1ba9e1c54914cc5dbc91c753684ccbb6c9df56

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