Malicious PDF — malware analysis report

Static analysis result for SHA-256 bddd2001d7f8281c…

MALICIOUS

PDF

43.9 KB Created: 2020-10-13 19:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d0aa86d662b443d44adb85a5bb5e126a SHA-1: bddf42c889c0aadef34bd110af2d92f4a5bb9f20 SHA-256: bddd2001d7f8281c6f1afcb8f2ad70a2144798fecd3dbb7d2584d6ebdbef9b65
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://gettraff.ru/strik?keyword=fps+cao+apk+download+2020 In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/lixavej_rivutavipulox_vunezikavad_lirumonoguwako.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nimemoroligamaj-tafixidupara.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kirorafagosox.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/vupaxopudopi.pdfIn PDF document text
    • https://site-1039525.mozfiles.com/files/1039525/duvusesufotekubur.pdfIn PDF document text
    • https://site-1036697.mozfiles.com/files/1036697/62856116296.pdfIn PDF document text
    • https://site-1038482.mozfiles.com/files/1038482/fabajupudulajijix.pdfIn PDF document text
    • https://site-1042920.mozfiles.com/files/1042920/nevona.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/xujewonagamaxu.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/8383cb7f-cb00-42f4-81c5-c47dda287c9e/mefawoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1907ecc-cbf7-4c69-8598-eb6bd1daad89/xadosikiwuxuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33779a0-41bc-4bac-97b6-3e07b141ed49/xezipuxoguvovag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07aa8410-76e6-4e1f-996c-a46dd0be8e00/63672070462.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_off000062a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 5356 bytes
SHA-256: 67b87bdf5c8270f3655150fde184e0abdfbc147f02e02f1f67a4d1a92d0ab96f
font_01_sfnt_off000074fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FD 15008 bytes
SHA-256: e27161849a4839cb6092c0e4b2bf64c17bfc4a8a3028c38fd42082239e06573f

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