Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b65479f1404fb5e…

MALICIOUS

PDF

37.1 KB Created: 2020-10-14 05:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 9fd8409c8f89294750e53099c6d50f46 SHA-1: f875d27120cef8ecca35850803c0c3986cdcc491 SHA-256: 2b65479f1404fb5eb687a7867a5d6b9bd045476aff74da658b04f8c584633da0
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=como+converter+pdf+em+jpg+gr%25C3%25A1tis In PDF document text
    • https://site-1040876.mozfiles.com/files/1040876/86743712449.pdfIn PDF document text
    • https://site-1041210.mozfiles.com/files/1041210/matiluleposo.pdfIn PDF document text
    • https://site-1036812.mozfiles.com/files/1036812/69972576765.pdfIn PDF document text
    • https://site-1039259.mozfiles.com/files/1039259/voruwizogimo.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/f3c29eb5-2a83-4ddc-bfa7-293135f8c153/18281273327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe8bc35b-32e6-43a1-9f8a-851fc74e05cc/62840308399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7282e8ae-2d35-492b-b5df-bfa58f9052ca/10368036836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ddad57-a6cb-49d4-b072-8199e05c1852/tuliluzomopasetopumazif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b60cd46-0f6e-4e7b-a0a8-1cd6bbc3211c/kimamof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f953fa7-9e18-4eff-974f-31afbf14bb06/53419906446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dbd4077-38c1-4929-8389-70f1c4c07f58/65562028347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1a1869f-1f70-4226-9d19-1b8f57ffd866/zoxes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8eefc4-1910-448b-a196-651bd4f709b5/62621040853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4635de7-fc72-41ac-8505-9ce763351c29/31048834901.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_off000050a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A7 5508 bytes
SHA-256: d0eca049651ebdbbc59cd53220f11146ba1a8f1d7c5ae40a1b7819e1eb2f5ebd
font_01_sfnt_off00006358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 10020 bytes
SHA-256: e1949e50fb4b9ace0381fa6b3add2dc750bbc78def1bce142b36194eac86fddf

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