Malicious PDF — malware analysis report

Static analysis result for SHA-256 d409904a86a51798…

MALICIOUS

PDF

43.5 KB Created: 2020-10-30 22:35:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c699c96009dde42d3c01fc8cbd5f9e9 SHA-1: 69f861c5edb52f7fc40c7ba8f772600fc971a172 SHA-256: d409904a86a51798a6a84d0f2e983d857baeb8b3905ace63996b620dde71c393
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.club/pify?keyword=termites+or+ants+damage In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413693/normal_5f94177695fa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_5f8f0919710f2.pdfIn PDF document text
    • https://wodedofa.weebly.com/uploads/1/3/4/3/134320626/3275952.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fcfdd38d-a472-40a0-862a-1cfc4c9d8681/zenemeginapuvemotafosajuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69978d86-fc56-4ec7-ab6a-40135b7389ed/lebumopopinizebanugewapat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/36146105574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a15588d-52b0-4c24-81ef-62c6df1ea087/mozogor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1902/0706/files/commercial_lease_abstract_form_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a15521b-777b-4b36-acfa-1baad842c5a1/zoraruvimilajuvukogax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1160/4132/files/1913_liberty_head_nickel_ebay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8158/9432/files/how_to_remove_pages_from_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0293/5477/files/family_vocabulary_printable_worksheets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 4852 bytes
SHA-256: 7d6c743dac89d9942dce7b7a8635802d7995d341427cbb757dee0e78cf5bdca0
font_01_sfnt_off00006f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F86 10508 bytes
SHA-256: 2d7424bd60c3527106fd8b8c518e2e7446693f1ee1cf63d623f1c314deb5b0e9
font_02_sfnt_off0000934f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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