Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d97cb5bd40afae…

MALICIOUS

PDF

37.6 KB Created: 2020-10-21 07:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 9a35a649343130d3daa65aa5fad8bf24 SHA-1: d5692cd69182607b1d2b2d8f21ce4b9ae2707437 SHA-256: c5d97cb5bd40afae80135bfd9cd447d0dfba6af0da1e5054453d00b87313ca33
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://ttraff.me/123?keyword=nihon+kohden+ecg+2350+user+manual In PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3532345.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/bf9eeef870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f87a178b5893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5f8a16fd29bf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f8f8b06cfd2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_5f87d3e172dcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5f8a6ad71d466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f88efbc1b346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_5f8ca5d3501d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368732/normal_5f8a292ad31fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7350/8006/files/what_does_relative_mean_in_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6855/1068/files/wafazuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4751/6835/files/wakupaxowud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1225/7952/files/19848081924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5474/3200/files/survivor_david_vs_goliath_cast_ranking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9377/7302/files/ps_worksheet_gravitational_potential_energy_and_kinetic_energy_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/5281/7573/files/last_battleground_mech_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7057/7045/files/2601372044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0084/6277/files/wahoo_elemnt_gps_bike_computer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0024/0541/files/psicoterapia_integrativa_eis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8987/7405/files/tx390_sportcraft_treadmill_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/descargar_wpsapp_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5679/8114/files/lesiones_osteoblasticas_y_osteoliticas.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_off0000542c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542C 5948 bytes
SHA-256: 7275d054adf400c5fa5f7469f712dffa9e66b25a126ef52cd5b0abadfe9d8147
font_01_sfnt_off00006838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6838 9536 bytes
SHA-256: afe89ed7c8d7ddd98c269a1680e4811760bf79db2639115f169242fbe7f1580e

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