Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a75054afad277e…

MALICIOUS

PDF

73.0 KB Created: 2021-02-28 08:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 852683e7eafd3befa47d8c219861be78 SHA-1: 698c85ebe1a41486826610595ad8c2a01dd5495c SHA-256: d5a75054afad277e37bdecc91c59365cfa2570dca4f157be7ab5f6f635bed514
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://resalured.ru/wb?keyword=cuanto%20mide%20un%20pie%20lineal%20en%20centimetros PDF link annotation
    • https://cdn.sqhk.co/tixunudixa/cRheibn/chess_app_offline_multiplayer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406464/normal_5ffb8e49ab157.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496602/normal_5fffa1156224d.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/96506390203.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485810/normal_5fcedda75c3d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fe470c11279c.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/83119289840.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/donake/kale_caesar_salad_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/40921024041.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/momozopim.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/bejewogudatekelikite.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/zoziwutuk.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/23441789978.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/61484278680.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/tovusavakigegalatixami.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_off0000dea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA5 5124 bytes
SHA-256: d9b7da9155714cf4755aa0950977fdd0b4bdc085c16349e4fa341a1f49ca37cc
font_01_sfnt_off0000eff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF2 12256 bytes
SHA-256: 2379bcfc18ea36b9c386ae571dbeb65e983e10e453f7d279f4eba59f8b476ab9