Malicious PDF — malware analysis report

Static analysis result for SHA-256 782a0c4767fd9e6e…

MALICIOUS

PDF

38.1 KB Created: 2020-10-08 23:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 4ad6016fe4e26f3da473a75651cae8a4 SHA-1: 4d8e86ec6de96aa8760f4df1a143e588c5dcc6b5 SHA-256: 782a0c4767fd9e6ef06b0f93364ae0eb9e8e6b30f271e8a228d1ef9b87133739
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=formal+and+informal+language+worksheets+pdf+ks2 In PDF document text
    • https://site-1038861.mozfiles.com/files/1038861/29135572478.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/65089935259.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/nufivelomomanirigog.pdfIn PDF document text
    • https://site-1042992.mozfiles.com/files/1042992/44954193150.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/dazidominutok.pdfIn PDF document text
    • https://site-1041864.mozfiles.com/files/1041864/52442633865.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/gofupu.pdfIn PDF document text
    • https://site-1037106.mozfiles.com/files/1037106/pufikuro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/529e4287-bab9-4c4a-80fd-d1292c53ff11/3214830986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b347f4a8-ac5e-44c9-97e6-f4096831c4e4/sebevotigowofurarud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9d80532-bb69-4aa1-a4b5-c5c30d54b990/746884906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5760/5529/files/black_desert_online_kunoichi_guide_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5738/8440/files/swcs_infinite_campus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9671/7977/files/gba_emulator_unblocked_chromebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0258/3449/files/formal_academic_writing_rules.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_off0000569e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x569E 5696 bytes
SHA-256: 4f95dc2515acc7812b092bc399c5c697b9d84760ea2551c20264d901e4ceb0a6
font_01_sfnt_off000069ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69ED 9844 bytes
SHA-256: 5dad3b3ee1f437f1d2832ab37fd7546d6eca6b1c51d5413cf556e8b4ca408e5e

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