Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dfd400580df7bd7…

MALICIOUS

PDF

53.4 KB Created: 2020-10-20 11:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-19
MD5: 205fbc27edfed34d893dd8a18f67842d SHA-1: 34b8125bf171017747497ebe106d31c7c20c6be0 SHA-256: 6dfd400580df7bd7ce1feeb427c7b58dbc11f1f9a69d6d1234b078ba7ef1cbb4
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • 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.cc/123?keyword=wipe+warmer+ultra+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378406/normal_5f8a8fdbd9e18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5f8d09b38eb9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380226/normal_5f8c212f6b940.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/rezoripun.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/6406237.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/rapebuxufikogabenos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f8e0a666496d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f891bed41cb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_5f8848026ac62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f89144ed7af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f8741c434fa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f8920fa2416f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f8cc728910f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00006fc1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00006fc1.bin)
    • https://cdn.shopify.com/s/files/1/0433/9856/1959/files/sovokufareki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9689/4357/files/tuvibitupukekelifomowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4062/2760/files/87194773115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7762/3201/files/49570244789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6445/4041/files/steel_ingot_skyrim_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/feldman_government_contract_guidebook.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
    • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off00005f47.bin)
    • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off00005f47.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off00005f47.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off00006fc1.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_04_sfnt_off0000b2d3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_04_sfnt_off0000b2d3.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F47 6588 bytes
SHA-256: c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285
font_01_sfnt_off00006fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC1 5184 bytes
SHA-256: 24eac81af31110645a60daed5abd2dccd46884be07aae3d640f59960622ac27e
font_02_sfnt_off00008152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8152 2244 bytes
SHA-256: 65a30859c6574a9b9c9b9d61349d59a5e872fa6e77e15cacf5eda5993b06b0de
font_03_sfnt_off00008b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7C 11744 bytes
SHA-256: a8783ea5476cb6cfbbc32244fb510f07e86dd43244c7da0d7a079bc1f91db107
font_04_sfnt_off0000b2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D3 16076 bytes
SHA-256: f530883c3cc306000364b4084cae578ea9cd0c162069bd297b59107afb5012c9