Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f5a4872f48174d…

MALICIOUS

PDF

48.0 KB Created: 2020-10-25 23:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7634de50f923d21dbfdb7eef68e31d55 SHA-1: e154f60c1b54578ce1218eafd57231de3ab2a5f6 SHA-256: 32f5a4872f48174dc4c296d7a0e8a4373489d1f3e7aa91bd53a14024052ebea8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://cctraff.ru/aws?keyword=map+of+usa+pdf+download In PDF document text
    • https://defelewag.weebly.com/uploads/1/3/2/7/132741475/2427572.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/5545888.pdfIn PDF document text
    • https://visuzajekug.weebly.com/uploads/1/3/4/3/134305902/sabofisevinenev_mixenukim_tiwowagi_waxezo.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/4010f08d.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/kumubiwoxelen_mudedojefuluvam_pakodixup_julowil.pdfIn PDF document text
    • https://timokejega.weebly.com/uploads/1/3/4/4/134454798/reninozuda.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/7a187234.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/vepulakanug.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/09cc3327a0d68c.pdfIn PDF document text
    • https://lividuxu.weebly.com/uploads/1/3/4/3/134354071/7546824.pdfIn PDF document text
    • https://nagigezivozitos.weebly.com/uploads/1/3/4/3/134340852/a9e82ce3aa.pdfIn PDF document text
    • https://mejefarekobuk.weebly.com/uploads/1/3/4/3/134338461/e4f74936dea699.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/edc7e59fc2ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007bb7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007bb7.bin)
    • https://cdn.shopify.com/s/files/1/0433/9420/3806/files/18830782528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8234/5376/files/bigokum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7898/9996/files/sociology_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5459/4731/files/4959580749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4661/6733/files/timothy_ferriss_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/kamurapaterilesavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9464/2340/files/alimentacion_en_pie_diabetico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3921/9099/files/ri_judiciary_smart_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/slenderman_must_die_chapter_7_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8705/7062/files/60181306516.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 extracted file (font_00_sfnt_off00007bb7.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB7 5036 bytes
SHA-256: a776b96d70e96ef869e67d7b218da70416aa57501cc51e8207c5dfa5adb6ce71
font_01_sfnt_off00008d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D05 11044 bytes
SHA-256: bb8d3ed9e55fa5d184933bf4fedf91983d58117ccca852c1754826c51c9d13a6