Malicious PDF — malware analysis report

Static analysis result for SHA-256 847dd3cf7ad011d2…

MALICIOUS

PDF

50.4 KB Created: 2020-11-01 15:46:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-05
MD5: 0db34fca406021ab951f989a475f0a7d SHA-1: 12a1389dea8c7198a06bf5929840ddf76fc4061d SHA-256: 847dd3cf7ad011d214be9b9318a4008a50b6701fccdf1f574a8b7e2c37a6b18a
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/wb?keyword=cod%20mobile%20mod%20apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_5f89f87f3c62d.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/govuvikoluluburowijegide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5f9549d39da06.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/93071167754.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f9d0124f3dd0.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/personal_representative_deed_for_colorado.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kuruzeletokuvowisunodede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5f93755694a22.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/reading_and_writing_curriculum_guide_deped.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/tefujuzinogilulimoxo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000061b4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000061b4.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000ace4.bin)
    • https://cdn.shopify.com/s/files/1/0504/1084/8406/files/ganamorogujofiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8552/7743/files/papor.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_off000061b4.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000981c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000981c.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 4660 bytes
SHA-256: f1dd0a9c547f3723fd79016bad5694e5556fce13e1abb6f80a5902121cddb2bb
font_01_sfnt_off00007188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7188 11388 bytes
SHA-256: 247bfabf439c9aace7a82a4de599a572aeb81de0c8b0e1dcccd7ae273233bfc3
font_02_sfnt_off0000981c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981C 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
font_03_sfnt_off0000ace4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACE4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3