Malicious PDF — malware analysis report

Static analysis result for SHA-256 36951fec8fdb6d66…

MALICIOUS

PDF

71.1 KB Created: 2021-02-21 12:59:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a666201f312cad45e709defd1adb5616 SHA-1: d1e4f450191586fbbae0e955aa3b8d4eeff3c887 SHA-256: 36951fec8fdb6d66257f381002ba8288522493acdfa9fe8aff16a5f7e0ea9ed0
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://baarspo.ru/wix?keyword=one+piece+timeline+with+movies PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458827/normal_5fd84e7d119c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5fec330cc392d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472208/normal_5fec7c24ded98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402936/normal_60011cd2bf66c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377936/normal_601c724256a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482870/normal_601a2b2a35cc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499283/normal_6028a49fa0bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_600ebe87d6282.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412170/normal_5ffcf3c0e8fb2.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/desekusoxi/dadijavamojuxaxewu.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/garden_flowers_images_hd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/mtd_chipper_shredder_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/rifaxenorefajujabalevug.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/xululimomot.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/nuvevojozidipunitivugi.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/parevizomupaxapije.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_off0000dabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABC 5048 bytes
SHA-256: 5016c609a5ad40012ac814cb73784dd12fa124347c3617995b16c61336595b8a
font_01_sfnt_off0000ebdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDC 10392 bytes
SHA-256: 66c00c5728d8c7336ea4dcdcaaa47fab0db81828557b44e6dea939c0f3badf73