Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d8bf33e366570d…

MALICIOUS

PDF

42.1 KB Created: 2020-10-11 10:27:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-28
MD5: 56370879381f42e02b4029989c61dd1a SHA-1: 4f86e9437a05b401f3bd1fa368bf7aa2a4e02f3c SHA-256: c7d8bf33e366570d2e9275bddec3991d263ad9d6625065e61263069477cc0926
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/strik?keyword=minecraft+parkur+map+1.8 In PDF document text
    • https://site-1036748.mozfiles.com/files/1036748/66891494953.pdfIn PDF document text
    • https://site-1043938.mozfiles.com/files/1043938/88618752859.pdfIn PDF document text
    • https://site-1038982.mozfiles.com/files/1038982/12706187929.pdfIn PDF document text
    • https://site-1038631.mozfiles.com/files/1038631/64624374394.pdfIn PDF document text
    • http://files.kodiaklions.org/uploads/1/3/2/7/132712572/6068197.pdfIn PDF document text
    • http://files.sergeypolstyanoy.com/uploads/1/3/1/0/131070212/tavawulivizepe.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005999.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005999.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008e23.bin)
    • https://cdn.shopify.com/s/files/1/0492/2372/9318/files/33615260514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/animal_crossing_happy_home_designer_rom_citra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5588/1121/files/venn_diagram_of_dna_and_rna.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_off00005999.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5999 5072 bytes
SHA-256: 666b04308fda5908d953c0a9224e5d3e4e26ab63b121bc27b2d8e39f06e80e57
font_01_sfnt_off00006ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC8 10356 bytes
SHA-256: 2bc4def2a3aa854e9b11062e00d71ed4108b1a85d05eb143d9a86ad0b7f7a6ec
font_02_sfnt_off00008e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E23 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361