Malicious PDF — malware analysis report

Static analysis result for SHA-256 1254b22508e8a28b…

MALICIOUS

PDF

72.4 KB Created: 2021-03-02 20:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d1c484e66bdf9911af79f044c89cf885 SHA-1: 714350b9eaf60a920072d82e24f5301d6a5f5eeb SHA-256: 1254b22508e8a28b1541f9dcd4874bc2b3177ecaa6fd4b38f95c58c90ae2daf8
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://xajibur.ru/wix?keyword=tera+online+valkyrie+pve+guide PDF link annotation
    • https://cdn.sqhk.co/zifeduwa/giigqGt/97826457615.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426942/normal_5feff22b8fa86.pdfIn PDF document text
    • https://cdn.sqhk.co/mofosalamo/VCfierv/rechargeable_torch_light_in_sri_lanka.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/fifTUES/super_word_search_puzzles.pdfIn PDF document text
    • https://cdn.sqhk.co/bijozugetav/iWFgfYq/warhammer_40000_freeblade_apk_download_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/fudikuzi/zicpiyk/rabiworunovuki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479235/normal_6011ed5bc19f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383304/normal_5fc99bc1ef290.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/Kgejj6J/x_core_hunter_reset.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/how_to_start_event_planning_business_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/lokuwanij/IjgPicH/21865785153.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5ff4ab9ea375a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368243/normal_5feca2432bb3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465024/normal_6036f2518b661.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivikonalijuto.myartsonline.com/90031078788.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_off0000dff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF4 5124 bytes
SHA-256: 750f1ab7e468154da096f23276288125c9c9d5f76192c4b3d0a74560585ad82a
font_01_sfnt_off0000f183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF183 10308 bytes
SHA-256: 1acd521fda05d73cc65b577b0a409b06b2170716a602d5e3998bd4abf163769c