Malicious PDF — malware analysis report

Static analysis result for SHA-256 44520409a622cbb0…

MALICIOUS

PDF

157.0 KB Created: 2020-10-26 17:15:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-10
MD5: 9e1e94f6b2c84c42a666565232a335b5 SHA-1: c2c2063fb60af8ec565fc301cd4b19bb2a5ae779 SHA-256: 44520409a622cbb0fa506a5fb759e66c9cb2fd40a65543fe078e56c5c77a2546
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/wb?keyword=oxford%20primary%20skills%20reading%20and%20writing%205%20pdf%20vk In PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/kowewekomu_pelasat_segobowizafida_zitakakesag.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/8790609.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/4985242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375908/normal_5f899c7aa102e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5f8f54294eb99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f93ff0658e3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f872e902cb36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_5f965e9881f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8bdb3685703.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/c22d4cb0-3663-4960-99f8-9cc10096fc0f/38849476143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/792bdb7b-53ec-4547-9b55-6dfd291f5700/vazitabav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d75f8de9-ab88-4a19-aff8-97e3ff96910c/reliveten.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1439e9-55df-4827-b7cf-5fc20b78c304/71027373462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f87539c-03f4-4246-8e90-2ce6469be94b/figozepudilibudesaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c04d231b-5f9f-48df-9dec-b23f456ebe8f/fomerukegujuvom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c467679-0597-4316-9106-ada31369e496/washington_square_mall_map_portland_oregon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3b79b3-3c4c-4a18-9049-df820315f9c5/niwibu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F9B1 5896 bytes
SHA-256: e178455ac889bf2d0db4cfecda2c24091b5aee15086a86b63fd8f5fbcf74903c
font_01_sfnt_off00020dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20DDE 21784 bytes
SHA-256: df9475804b8562c19412160d1afa0a476e155a5a91e578e83ca3882ae4c256c6
font_02_sfnt_off00025045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25045 16344 bytes
SHA-256: e8346d1cca2f7aa88137c00b6d80a3d18060561cd6e20ad3c236e69f2c37809e

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