Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd113257ca8414f…

MALICIOUS

PDF

63.7 KB Created: 2020-11-08 16:20:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 0cc474a9fd915957fd17c0654bcc0b41 SHA-1: d92dbe9edb45dd428b90416aeacf40bf28cd8e15 SHA-256: 9fd113257ca8414fc003ec9cab6656bca5f6e18bb69e3779fd90973c6d5102e1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=apk+minecraft+download+newest+version PDF link annotation
    • https://jixidaku.weebly.com/uploads/1/3/4/4/134495137/dofudijotizejifif.pdfIn PDF document text
    • https://kukatuvitakutir.weebly.com/uploads/1/3/4/6/134690336/tebujag-samujuvuwox-tafupawufo.pdfIn PDF document text
    • https://valodoxajub.weebly.com/uploads/1/3/4/4/134435871/1977073.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/5131087.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bofasigel.files.wordpress.com/2020/11/vw_beetle_repair_manual_free.pdfIn PDF document text
    • https://gadigapejiti.files.wordpress.com/2020/11/40943995041.pdfIn PDF document text
    • https://felibule.files.wordpress.com/2020/11/5485573432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e838cc08-7fec-4b08-9d78-e79e282eab0a/bojetipomidodir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0d2623b-4973-40e9-9ce5-a71577629fab/practical_iridology.pdfIn PDF document text
    • https://vexuxab.files.wordpress.com/2020/11/zoosk_free_download_for_android.pdfIn PDF document text
    • https://somopewikiga768872658.files.wordpress.com/2020/11/72319464660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09215f9d-9630-4994-8f8b-63fe0eac26fc/kugesi.pdfIn PDF document text
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdfIn PDF document text
    • https://vevadiwo.files.wordpress.com/2020/11/mt6572_android_scatter_emmc_txt_free_download.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D9 5176 bytes
SHA-256: b3b3b1bc3ef10b76c4a0ffad90ec015ae1df59a782ab84b40fac4f82dd0eda17
font_01_sfnt_off0000b8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8DF 5508 bytes
SHA-256: 7da2979a77d42d2282bbb9ecfa3b6ecf254853182c136446bb0ec1bf0c8244bb
font_02_sfnt_off0000cba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA2 11412 bytes
SHA-256: d19f5dab4346bbd31b18a5d4b778479bb49a3f221baf64c4c183c719ceaef938

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