Malicious PDF — malware analysis report

Static analysis result for SHA-256 9626fb5af6d26c1a…

MALICIOUS

PDF

43.3 KB Created: 2020-10-29 18:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e3e058b5e74b37ac85ed1559ded289f6 SHA-1: be785aedc3d043267934eefbc6f58083960f7406 SHA-256: 9626fb5af6d26c1aecdf9fbe0901183fbd906dd2d0419d0c7f6088975b044768
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.link/pify?keyword=rocked+out+cora+hawkes+read+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5f92ccc18d581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f9495913b536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369923/normal_5f989cc9e0464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381536/normal_5f8b68a0c664f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_5f94ec50a1775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f9a46c2a07d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f8d7e8535769.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8d3bd8d8700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f8c898097be8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5f88ce75dffd9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006aae.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006aae.bin)
    • https://uploads.strikinglycdn.com/files/80635f9f-e6fa-48d0-9958-a0b0b73993fe/foviwuji.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/free_snap_chat_hack_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/how_to_search_for_just_files_on_google.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_off00006aae.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 5188 bytes
SHA-256: 3c3194bbf7f9dfc8dd0ff087cfdee8eba9afb97e44d7d1ce7a618a0a5b1a0aa3
font_01_sfnt_off00007c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C64 10580 bytes
SHA-256: 4cd2091568528820421d8aa8fbe1414216cb2966ab2610661f7ebc01481722b8