Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cdbec474c362e5…

MALICIOUS

PDF

37.1 KB Created: 2020-10-12 12:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-27
MD5: 1c3798732565d881b5e8f7ec1e499f06 SHA-1: 59a6fdb99613f559acc9f999ce0fdb898749a5d2 SHA-256: a9cdbec474c362e53d24942468ad3ef44a5b83bbce2fc88d6ff0c74ce0917771
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/strik?keyword=download+fanatical+football+apk In PDF document text
    • http://files.modularsinc.com/uploads/1/3/2/6/132695639/4910941.pdfIn PDF document text
    • https://site-1044256.mozfiles.com/files/1044256/57922667788.pdfIn PDF document text
    • https://site-1039320.mozfiles.com/files/1039320/48486694952.pdfIn PDF document text
    • https://site-1040610.mozfiles.com/files/1040610/28528104766.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005365.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005365.bin)
    • https://cdn.shopify.com/s/files/1/0484/8559/7346/files/94965221980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5164/1749/files/bigotunelutekin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/4755/8824/files/axe_for_sale_home_depot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4571/7669/files/warukurezuzuzogip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2240/0674/files/dakafer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/xipatomusulejelanak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6767/5302/files/y_no_se_lo_trago_la_tierra_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/53329133853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8622/4791/files/modern_combat_5_apk_data.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_off00005365.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5365 5168 bytes
SHA-256: 1c378f411e747a527411fd1029eb84e42fa322536a03339e5a982a54e44168ef
font_01_sfnt_off00006526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6526 9980 bytes
SHA-256: 7edc215a49052b8d38daaabfc704ddb324d1cff2c8a890f89d332fb6d336c614