Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d868f72d3b3c299…

MALICIOUS

PDF

43.1 KB Created: 2020-10-21 11:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 4803bee9d613b4fb2588b61e808f2d63 SHA-1: 8599934c43fc87084e7279c2a5bf75a303b4ef32 SHA-256: 5d868f72d3b3c299f1026f16e219683d8d9826c83a9bdd173683c3b3b4f0f8a5
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://ttraff.ru/123?keyword=baby+alive+stroller+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f87f04996b23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_5f8d438b8ef78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f88511c41210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f8aac0682e88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5f8a827402573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f88906f872ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f8bd1dfc26e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f872b86da7a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368492/normal_5f877e51b3dab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f8fab63cfee0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5f8983073b1d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f895c7ad3ac4.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/50d72a00-0a31-4080-982d-b881e2aad121/space_paws_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4274f596-46e0-4118-90e7-7d9970b070d5/59398681139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16eeeae3-368e-4e28-9364-fd7329df6e56/sipogipovosasipetakif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8445e11-38bd-44ff-84fe-8471493748fb/33137773860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e977c86e-9aea-4434-b02b-41b7daf62629/gagitolupebaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ad02adc-e25c-45b9-9953-34e48c3a2495/81845300168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84da0a35-b3f5-4e40-b177-682486bdb3c9/46987310042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05064f57-25fb-4835-a708-e94d6b300ec3/vuzesizagaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2252ca94-36c6-4880-8031-a33b0c980fcf/60638025476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99cd9122-19d0-4522-9346-e082b4971922/tibiwofadukekugoga.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_off00006b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8E 5144 bytes
SHA-256: d928c426f89bc51678507f9669c90cd77b570f4d41195771859cc5a6bd0b5a5c
font_01_sfnt_off00007d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D22 9956 bytes
SHA-256: c8ddfd06e4ce8774911c53a8ce2b403e184b0879a69aaef0c997483db1ed8b8c

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