Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2698ca5bc5739e…

MALICIOUS

PDF

69.9 KB Created: 2021-02-05 17:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: cd8378ffc0877924c5255bcb4e980728 SHA-1: 5d7bd1fff60ce7d43b3b7c25d72dfadf0e7108fe SHA-256: 1b2698ca5bc5739ecd564b4bd78c4551ad4e6a2672a55bec45d9444d3235f4a1
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://seumenha.ru/square?utm_term=cursive+writing+practice+worksheets+uk PDF link annotation
    • https://ranenowubugipo.weebly.com/uploads/1/3/4/0/134040983/b744ec452.pdfIn PDF document text
    • https://sexozubo.weebly.com/uploads/1/3/0/7/130740033/xevakazisumupubej.pdfIn PDF document text
    • http://pycnidwzxc.info/448181281693aw44.pdfIn PDF document text
    • https://lekibuwowobaveg.weebly.com/uploads/1/3/5/2/135295955/848792.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/oscar_wilde_nyc_halloweenwtupw.pdfIn PDF document text
    • http://jarizodej.22web.org/61768595293.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/juxobukegobibemcr1es.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/lorugipopuxe/australian_passport_renewal_form_2019.pdfIn PDF document text
    • http://fudowoxalukiki.rf.gd/green_supply_chain_management_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/hungry_shark_evolution_hack_apk_godzilla.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/86562022011.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/malayalam_movies_2018_list_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/deferred_tax_balance_sheet_liability_method.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/agenda_2018_para_imprimir.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/ziparamegimezumidulafaza.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_off0000d4eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EB 5284 bytes
SHA-256: 12f7ee97eb77b5bc7a07212d3699a176e5e710916693690804193b653188d6fa
font_01_sfnt_off0000e6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 10492 bytes
SHA-256: f4815f4a2f6b87e7e8c1a1454833cd295afcc3e76b7a323b3b6fddeab1869111