Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7a0ac5c4dc589f…

MALICIOUS

PDF

47.8 KB Created: 2020-09-30 08:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 9ce39e747b5a81bd10d7ead6b261f2f7 SHA-1: 4e809e2fa7674e4390db07317718c081bfc341cf SHA-256: cd7a0ac5c4dc589f53b10300ca1cb19d10c424ebd0caebaebf03d341d4bc64e8
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://ggtraff.ru/strik?keyword=principles+of+sensory+integration+therapy+pdf In PDF document text
    • https://site-1037894.mozfiles.com/files/1037894/zajedagu.pdfIn PDF document text
    • https://site-1037227.mozfiles.com/files/1037227/13909027938.pdfIn PDF document text
    • https://site-1037113.mozfiles.com/files/1037113/navujifutadelek.pdfIn PDF document text
    • http://files.sumterbiblechurch.org/uploads/1/3/0/7/130776791/5677206.pdfIn PDF document text
    • http://files.shopstudio233.com/uploads/1/3/1/6/131636689/rijatigomamapub.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/8ab2364f-cc82-4705-bcde-570ce94dccf4/67858744112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c45c09-a54b-4bdc-bef0-cd58c0fb5e42/guwowasipegozixilisop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e18150-658d-4d42-ac2e-75cfc5646bd1/kewuzubavawonebuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8b768d-e400-4326-b9d7-7d9c3ef88070/derurajalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58b82381-9476-4083-aecf-b7d81210b897/85998533020.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_off00007b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B16 5520 bytes
SHA-256: a9da7b77eb02a91a709a4dc4897edb2ce5b24570d216691e94d31611cbce9a2b
font_01_sfnt_off00008dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDE 11308 bytes
SHA-256: 4c54d37f52e945ce2b342ad6ea141f5a7f9a92016634d2c4f187ef4bb0d5731a