Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e35406a1c6ff53f…

MALICIOUS

PDF

55.6 KB Created: 2020-11-01 18:50:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: f513ffae98f9d2774a3b328a710f5ac0 SHA-1: 718c79f31c2511740f921dcc5e184672079d0461 SHA-256: 4e35406a1c6ff53fd2d0a0433f1b53c07cb50c4f8f1a9de8db07184680496f98
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://cctraff.ru/wb?keyword=gcse%202020%20uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f872a4d2e8d4.pdfIn PDF document text
    • https://fasefipuronupa.weebly.com/uploads/1/3/4/4/134471496/eef1614244394.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/wilitovutegagaligazelox.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/speak_softly_love_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/regababovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0269/0199/files/anticoagulation_post_stroke_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/kapadiluj.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/bsc_mathematics_notes_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/bejopozedazedewemizixef.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/45819715906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e126f37-558f-4fe1-9c2b-17f48f7c59e8/nha_ekg_study_guide_2018.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8698 4824 bytes
SHA-256: 473f03d4be99baa91d7fb4d491095973b3d598d45892e2211c1a0c6a191ad953
font_01_sfnt_off00009728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9728 10868 bytes
SHA-256: 16840d4fc19ddb92acf65418b65874399c5d6cf55959c7b246431a50e3b578ef
font_02_sfnt_off0000bc65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC65 16208 bytes
SHA-256: c691c2dc236ff1c3149f8178f30dcb30456d959af2bd230901b395ad55359d31