Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dd7b20d627f276…

MALICIOUS

PDF

37.7 KB Created: 2020-11-08 09:47:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: b304912af495957477227d04f5f9c44d SHA-1: fd5f249f6d0cea07ae0cc264af35c610b685dc05 SHA-256: c5dd7b20d627f2768f56ddd9d6f0ad41f3d3c2bf713f56a44873af6b911ea805
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://gettraff.ru/wb?keyword=lvds%20cable%20video In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387433/normal_5f9c823f5cd4d.pdfIn PDF document text
    • https://zozunane.weebly.com/uploads/1/3/4/3/134316446/b62b08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_5f8d69da20dc3.pdfIn PDF document text
    • https://noloturajikule.weebly.com/uploads/1/3/4/4/134486045/c5408b3ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388062/normal_5f8f704fa74cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455907/normal_5fa2574ae6786.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://nikibok.files.wordpress.com/2020/11/68103743144.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/free_carport_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/printable_pokemon_cards_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/coreldraw_2018_shortcut_keys_download.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_off00005604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5604 4976 bytes
SHA-256: cd64d817feb34b0f6f74ae59d772a410b5f4bdaff40ab8daf28f2e60ce013b66
font_01_sfnt_off00006707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6707 10500 bytes
SHA-256: 9825ff75d95a2b64973f8a88885628b67fb464892efbbbad9903837469c339b9