Malicious PDF — malware analysis report

Static analysis result for SHA-256 08111d70b2c93890…

MALICIOUS

PDF

43.8 KB Created: 2020-10-16 02:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6bc2d2b2f04e87cd9ea5e7dffeacc2f6 SHA-1: d9010a4dca60907f1e74f149907e48de00b7aa65 SHA-256: 08111d70b2c93890e1664a7ca1f008a773ab6ce99ba2378faa2d2f2914ae84b1
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://gettraff.ru/123?keyword=diatomeas+como+bioindicadores+pdf In PDF document text
    • https://site-1043851.mozfiles.com/files/1043851/dajesoladiwe.pdfIn PDF document text
    • https://site-1039346.mozfiles.com/files/1039346/mukusamuvawi.pdfIn PDF document text
    • https://site-1042830.mozfiles.com/files/1042830/luvobisonom.pdfIn PDF document text
    • https://site-1038913.mozfiles.com/files/1038913/devatofuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f87d6aa21ec9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f88b82a893e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f88d0d52c62b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f87c7323733c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f88cc0f94154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f875af4e50fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f88cccd8d119.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/be702f00-5095-4472-9937-6bf611c6735a/wavugoxiniwululijed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5a74e97-d8af-4b47-9109-7b8eec8e3487/vonimuxunusil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d685a6-7f4d-4338-8aa9-7528ae325373/wemoxinufevenefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f21b0da0-4fee-45bf-9746-cad382b45a7a/67066445119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6b9c98-f0fd-4f10-b74f-65023a89e649/50352216798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3433/6670/files/braun_coffee_grinder_blade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3215/2744/files/eckhart_tolle_nowa_ziemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4456/8989/files/jowabojojiwudami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9544/8988/files/puxedek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9016/5403/files/vedenibedala.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_off00006b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B18 5408 bytes
SHA-256: 46b42fcca88d770ebf212a0680d7180a842a089817ab8311e8d453bd2053daa9
font_01_sfnt_off00007d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D61 10824 bytes
SHA-256: 3bd816733bd9c60049cea87dc63374e1504447adab52d1bd52554f93ff548830

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