Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe24a4da96e39ddb…

MALICIOUS

PDF

38.3 KB Created: 2020-10-09 01:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 43fa1a832287a295c1f4a2634083a5df SHA-1: 5c0cfa7429b1c35d939ee1c1e6bc380961173a8c SHA-256: fe24a4da96e39ddb67f77a4308d74e62a95ba6ce57428d291036d598b8973e9f
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, presenting a deceptive lure for movie downloads to encourage users to click on malicious URLs. The embedded links, such as 'https://ggtraff.ru/strik?keyword=fast+and+furious+7+720p+dual+audio+free+download', are designed to redirect users to potentially harmful content. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious redirector and link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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/strik?keyword=fast+and+furious+7+720p+dual+audio+free+download In PDF document text
    • http://files.yorkshireweeklynews.co.uk/uploads/1/3/0/8/130814408/db9afe5eb.pdfIn PDF document text
    • http://muzuwasos.simplicitylavenderfarm.com/uploads/1/3/0/7/130776533/jogurojujexiweruvawu.pdfIn PDF document text
    • http://files.popmovee.com/uploads/1/3/0/9/130969322/xuwubagabiwena.pdfIn PDF document text
    • http://files.whimsicalreflections.com/uploads/1/3/0/7/130775907/0fe10802fcfd642.pdfIn PDF document text
    • http://files.lifeschool-education.com/uploads/1/3/1/4/131483719/8486108.pdfIn PDF document text
    • http://files.cakelaine.com/uploads/1/3/2/7/132741110/rubilemi_luruxogig_foririsudifiri.pdfIn PDF document text
    • http://files.drtadeusik.com/uploads/1/3/1/1/131163666/7340044.pdfIn PDF document text
    • http://lisenow.inspectmyhomehpi.com/uploads/1/3/1/3/131398455/7e90f98686df44.pdfIn PDF document text
    • http://sunojij.writing4apurpose.com/uploads/1/3/2/6/132695832/5492604.pdfIn PDF document text
    • https://site-1039135.mozfiles.com/files/1039135/rupapugom.pdfIn PDF document text
    • https://site-1036988.mozfiles.com/files/1036988/94875460275.pdfIn PDF document text
    • https://site-1038494.mozfiles.com/files/1038494/41827573847.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/86472404330.pdfIn PDF document text
    • https://site-1042677.mozfiles.com/files/1042677/pividi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/bopan.pdfIn 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_off000064fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 5436 bytes
SHA-256: 397ccb8cd8eef51c2fceba9338a7b41312f878ad0f42295f7109c48f5e90dd96
font_01_sfnt_off000077a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A6 10392 bytes
SHA-256: 13c1b65f66759c57e17d762cdfa7e3dc3449a79868e5513a18a713c613ffb75c

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