Malicious PDF — malware analysis report

Static analysis result for SHA-256 295eb70698a0f998…

MALICIOUS

PDF

38.8 KB Created: 2020-10-16 07:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 643e1c5adba3e3ec0fccfcbc892c3faf SHA-1: 169ec353698020a162feb69c75cd193f2b2cea2a SHA-256: 295eb70698a0f998e3644c27e79c6bd53c614b08f64f8e9bd9968c7c8704c7e3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?keyword=instax+mini+user+manual In PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/2189261.pdfIn PDF document text
    • https://ponixojezunuto.weebly.com/uploads/1/3/0/9/130969897/tisizenoburaru.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/b8a7b22de405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_5f890fd46e513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f870d993b6d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5f8830ac97611.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5f8901ef8e075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f88f55348d4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5f88d0b675700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f88a5b905888.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f87a7997755a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f8869e7ac5f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_5f891cf0b9f50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f881f8a570c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f8738e309c2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372980/normal_5f88c411389d2.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/5167d601-83c7-4e10-a5c4-eab7e90f1d81/jutugarusojakumaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb8b40d-ece5-46c6-af38-6765baa454af/zoxiwudakuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd0bf50-35dd-472f-b896-7be01b614610/zifipikolipavopomig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a73789-710b-4d4e-a341-17106fc387d2/notazovovizunusemepobis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6025cc29-e2ee-45f0-9afc-5f4b8214c4da/semixopepovaponizuwetupos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6fea673-0a40-46e0-a4a2-768c7350d3ea/93016757460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d4ad79-6d7e-4b8e-b762-323c5935a320/vufiwomitepotatejo.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_off00005ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE1 4836 bytes
SHA-256: 269ec6bb0d15097a95182d8430940d5a42c0a33240ce7b17becfdebb4065c577
font_01_sfnt_off00006d29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D29 9416 bytes
SHA-256: 8d60a7f21f994d5a42e60dfcdd56ba6ea2372188d73b8397e2bf420415413219

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