Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd0d21a1180681e…

MALICIOUS

PDF

40.4 KB Created: 2020-10-09 18:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: eeef87f783ba477e0bac9f2119ea01f8 SHA-1: 2f100d9fc0a264d375efc62192ff4714e0aa1e1e SHA-256: 3dd0d21a1180681e1f7406be1fd9ad70108d584c8332011fda070d6ab5270eeb
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=independent+and+dependent+variables+practice+worksheet In PDF document text
    • https://site-1041388.mozfiles.com/files/1041388/xotudiwe.pdfIn PDF document text
    • https://site-1041598.mozfiles.com/files/1041598/27729865578.pdfIn PDF document text
    • https://site-1043843.mozfiles.com/files/1043843/tawopububotezuxisiv.pdfIn PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/53281229377.pdfIn PDF document text
    • https://site-1039754.mozfiles.com/files/1039754/jomuriputegoferevonuron.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/donkey_kong_country_guide_snes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7613/4082/files/42937965422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5461/9560/files/50412069339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a7c694-5c75-475f-8b69-a37d14039b48/29535229471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a3fcd0-04ec-46f1-a701-415af688f415/zuzujunafagorag.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_off00005f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8A 5456 bytes
SHA-256: b69d1686f0abfd487be0b4a67881b2336bfa1d90e7a79a6a79c0bbbbfe9f476e
font_01_sfnt_off00007222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 10184 bytes
SHA-256: e29152ecb813ee225a4ff7258457d6bbbb1d94f99bdbd3c6e5b303b2ea539cf0