Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d196d7e6d61450…

MALICIOUS

PDF

50.2 KB Created: 2020-10-25 09:51:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 19e97767d28fea6a033e92655944b16e SHA-1: aa5faf9cf3fcadb3c6c013dbffc14b83e119572d SHA-256: 22d196d7e6d61450d51beeea3e7e5f2324db3cad6789ad8222e3f890a42f2449
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://cctraff.ru/123?keyword=calendario+2021+pdf+con+festivit%25C3%25A0 In PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/mojedepiwovefofe.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/aa92d.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/7b33a83c024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f906b1c7864b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8f86b0be788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_5f8edd00cd5e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_5f89071b67aac.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000801b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000801b.bin)
    • https://cdn.shopify.com/s/files/1/0461/9501/5831/files/81881402497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/46125932544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/android_linearlayout_align_parent_bottom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/vosoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7004481c-1aed-4f5b-b2bd-4e9095bae090/xojogiwexaduxududesofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e42bfc6-d3be-4e8e-a536-fc3e343f65be/18680776605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a7fe77-264e-456b-a743-3f47c0c051bd/74526854435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02841c10-c7ff-4353-8435-fe81a43ce7f5/diagnostico_microbiologico_bailey_scott.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb625e5c-63c5-432c-bbed-3bbbeb616988/1552701234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/bogatonewavabaxezakivim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5444/3937/files/65638716081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/9362/2429/files/xekerivofexozulutidobo.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 extracted file (font_00_sfnt_off0000801b.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000801b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801B 5676 bytes
SHA-256: d67941ca4492a081870de7c4f23973a8d95171a14685e0acabe1cce90b4356a5
font_01_sfnt_off000092ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92EE 11972 bytes
SHA-256: 4c228600b5dec3c7c09c96c9ee2767219b03be8eff7f5f6729648d996857f568

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