Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fe3cda370aba06…

MALICIOUS

PDF

51.8 KB Created: 2020-10-27 14:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 9df04806d3b7fc425e4e3d124c0d63a9 SHA-1: b9bd227409e4f1470e265f33bb9aa0e76b76b72d SHA-256: c9fe3cda370aba0668d0fc178986a4c40fcd9b2062bd9c90a81a494332ac2ef4
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.link/123?keyword=il-2+tank+crew+single+player In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5f962b01b4b33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f874d1dd679d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f9015643269f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_5f8bce6213eaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393220/normal_5f9396b6d26a8.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/sejajoz-welodi-jokuvi.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/gilubalujawiwaregu.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/rawabevujoroj.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008701.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008701.bin)
    • https://cdn.shopify.com/s/files/1/0483/0615/9779/files/9201275161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195590ea-beaf-409f-8ccc-a64a99a8f1ca/52060375314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17767d6-c542-4ccf-8851-c1febb7b3c5a/daisy_powerline_airstrike_240_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bc29d08-791f-4714-a668-a9ab9eeff65d/43049771968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62780ced-c912-487e-8ea6-c78e539ac1fb/52682161939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3795cc-c19f-4213-9214-61e0c34083a2/71585447042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6fe5030-c589-4b43-89e4-9c62162328d4/37115745347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f94ae0d3-080b-4297-b705-a2e023b990f5/polijubukinedunozazode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9125cb9-5fa7-47f8-9935-9c8efdd61316/pawuwebaniguwizaw.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/2018_uae_calendar_with_holidays.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/80092410436.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/60671399291.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/jivepiditubi.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_off00008701.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8701 5460 bytes
SHA-256: 78759776f95973344323ea6445b8e46c760dea25f96351e40b5c390f0022c794
font_01_sfnt_off000099ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BA 12956 bytes
SHA-256: 279e69da309a8a04091e328175a2d60d93c7faa91cf91912c9e348d20253a0e6