Malicious PDF — malware analysis report

Static analysis result for SHA-256 3009be2535249b4d…

MALICIOUS

PDF

40.1 KB Created: 2020-08-28 13:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0343ec73ffab352b1e9554402b25475b SHA-1: 73b4ff79130ceb63b5e1a107429ce5f397ab3558 SHA-256: 3009be2535249b4d9f3de38c46f5989d235ca801a791f5e3160e49f40651068c
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, contains the same redirector URL and references to cub scout uniforms, suggesting a lure. The presence of numerous external links, many pointing to PDF files on Shopify, further supports the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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/pify?keyword=cub+scout+uniform+badge+position In PDF document text
    • http://kuzerobe.beautifulmemoriestravel.com/uploads/1/3/1/6/131637836/nidodufogegid.pdfIn PDF document text
    • http://files.cuicsocal.org/uploads/1/3/0/8/130814594/7502789.pdfIn PDF document text
    • http://files.flowersindeed.com/uploads/1/3/2/6/132681976/2803412.pdfIn PDF document text
    • http://files.heatherquiltz.com/uploads/1/3/2/7/132710671/2de826e50e.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/1/0432/9072/2454/files/pytest_coverage_report_xml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0679/4656/files/africanos_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/project_on_employee_absenteeism_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/best_3d_games_apk_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4019/2150/files/principles_of_modern_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9943/files/hiv_guidelines_2019_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4001/files/kifatowaluzajenozugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/52556546444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/symmetry_worksheets_for_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2610/1925/files/28623236227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5927/7987/files/boolean_algebra_problems_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/gepukizawipupenebir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/windows_10_snipping_tool_shortcut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/barrera_hematoplacentaria.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_off00005f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2B 5488 bytes
SHA-256: 3098c0baacbbf4f9c67bcc2ccaa810b6457f5b2404f967c51b9cdfd8acaf5789
font_01_sfnt_off000071af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AF 9860 bytes
SHA-256: e019fe7260782c94897ac224bc243633e77b81ca151c01d20b5aa7297f0dd561

Open this report in the interactive analyzer, or submit your own file for analysis.