Malicious PDF — malware analysis report

Static analysis result for SHA-256 96099e46f9ec45f0…

MALICIOUS

PDF

41.8 KB Created: 2020-11-06 21:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: ccc01754cabdaf3479b6388151dbad8a SHA-1: 68dabf0956da7d8634baf0392979c266e07e6e9e SHA-256: 96099e46f9ec45f0217d194070d6c547c0462914f42d9b69002b632f468cc702
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafffi.ru/aws?keyword=pro+football+reference+2018+nfl+draft PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5f9236068ffa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5f8fa58a20b4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_5f93faa57eb1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376379/normal_5f9f568ad0b79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413125/normal_5f97285f08840.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413703/normal_5f9687143c0e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_5f8fb47415be4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415768/normal_5f9eb902b8396.pdfIn PDF document text
    • https://mubuwejazanewa.weebly.com/uploads/1/3/4/5/134585617/3968381.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zomizekakigo.files.wordpress.com/2020/11/zubalidetizatewebowo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/magic_wand_attachments_in_use.pdfIn PDF document text
    • https://zesokipiv.files.wordpress.com/2020/11/sokuw.pdfIn PDF document text
    • https://fefitaw.files.wordpress.com/2020/11/64939725781.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/87111394011.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_off000062bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BB 5496 bytes
SHA-256: d7f325635d9a019be5feb5afbe28a03d983b8bd0eed25ac086097a50c9ea06fb
font_01_sfnt_off0000757b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 10732 bytes
SHA-256: 45c757bd18e521d877034243fdb441d2099841d0854a9045a546ddae8a72a3d3