Malicious PDF — malware analysis report

Static analysis result for SHA-256 927aedee357336c7…

MALICIOUS

PDF

47.5 KB Created: 2020-10-27 21:16:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: aa38039c0ca05c62f2aab92e1037a4e9 SHA-1: c5286cbd5777d496f20542578f4688bf1bbc150a SHA-256: 927aedee357336c71d70108473c385b4b0acd846f790975523b1ec92bfee979d
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/123?keyword=soul+mate+quotes+for+him In PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/5c2eeb51b.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/wezal-bujene-medixexenixe-kekutojipes.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/polupotekisoga.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/suloz.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/dadoximazoxege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_5f93f299ba8f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5f9380a5b5752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f9084c27a87d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f8e28dfb8597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f87a05f40f99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f9871eba085c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380522/normal_5f8f08bda66c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f93927699a28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f8f27899a2eb.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/sodidapesed-levevew-sagus-wokufafavi.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/gedemeti_vemopu_nurowetovideler.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007e2e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007e2e.bin)
    • https://cdn.shopify.com/s/files/1/0505/2379/9723/files/wovezid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4179/9330/files/birepoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0383/8104/files/photo_grid_for_pc_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/lujexux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/5597910998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/questoes_de_matematica_enem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5134/3768/files/5231873449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/67204128175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2416/1704/files/zufovozizikabafufojujote.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_01_sfnt_off00007e2e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B9 3808 bytes
SHA-256: 01c49d956bce09fc538f71a149cd5f6bf1bef6107a78ae3dadc1ca5181920244
font_01_sfnt_off00007e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2E 5236 bytes
SHA-256: b121c409b73d8541be8e07b8948bdbe26e138c7f1707303068acad19ccad43f8
font_02_sfnt_off00008fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 9484 bytes
SHA-256: a91e336f7a2b89a75b4ddbc9f139fc3e1de587a0795fc3464f6215179a30cfe1