Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ce4effa4329c75…

MALICIOUS

PDF

43.0 KB Created: 2020-10-16 00:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c0e4dce80fa9d0d2c155021e65f3d18e SHA-1: 2e381244b2671ad381cf34e6ff9f84fd409d57ba SHA-256: 87ce4effa4329c75ef3a56ec51870c92a2b30d150095442673d675bb77543941
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://ggtraff.ru/123?keyword=ranexa+patient+assistance+pdf In PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/0dbf8bf3a319.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/2a5ad8bcb27f8a7.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/fuzozilulapi_fakaf.pdfIn PDF document text
    • https://site-1040134.mozfiles.com/files/1040134/35725086572.pdfIn PDF document text
    • https://site-1042940.mozfiles.com/files/1042940/48179846046.pdfIn PDF document text
    • https://site-1041922.mozfiles.com/files/1041922/vaperigezonusanak.pdfIn PDF document text
    • https://site-1044062.mozfiles.com/files/1044062/83558802164.pdfIn PDF document text
    • https://site-1040998.mozfiles.com/files/1040998/lei_9099_95_atualizada_comentada.pdfIn PDF document text
    • https://site-1042444.mozfiles.com/files/1042444/download_update_windows_10_manually.pdfIn PDF document text
    • https://fizolapojola.weebly.com/uploads/1/3/1/3/131383549/sevabenabuno-vugexajazubi-xofusasuvonulim-barogugasewokat.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/8728124.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/5282713.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/4cc8d5a8-79db-4eda-b8ad-7717a73a90e0/wutidefove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d3db90f-2315-4549-8792-7374b94e09a7/47781808958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e5a81c2-f76f-4a41-adbe-1c08dfe097e0/jevuvurozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83c59b0e-4fe7-4254-a013-d02a6781c084/funepapotavipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c35865c-cd4e-4800-8bd7-5f06efb63299/76039543478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e82eab93-88b7-4f55-a84a-4f71a6658682/zamodokamobixuvasovenisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c87977f0-acdf-48ab-8530-fd7cbd5b093b/gopafotejur.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_off0000690e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690E 5096 bytes
SHA-256: 6c3c0fba1a805578d98454e66239e2e6acf4dcd3f265307f514af62252a3d30e
font_01_sfnt_off00007a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7F 10688 bytes
SHA-256: e875d663d1810168be093429f94901bb680e34d397cd63afbcd34b72d227aad8