Malicious PDF — malware analysis report

Static analysis result for SHA-256 091cbf75946fb34a…

MALICIOUS

PDF

43.5 KB Created: 2020-09-16 19:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c83f58f644cf27bc9d3bf694fae01694 SHA-1: 7cea63d72a744cd528f9409d3dff53ea6e137ccc SHA-256: 091cbf75946fb34a19e617f62b6274d965dec76d94af441ffa4089f38373e97e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to known malicious redirector infrastructure and link farms. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware delivery.

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/wix?keyword=kid+vs+ice+cream+hacked+arcadeprehacks
    • http://tumumud.autofashions-pittsboro-nc.com/uploads/1/3/0/8/130814328/5217060.pdf
    • http://files.adolescentidentities.com/uploads/1/3/1/3/131398598/3525293.pdf
    • http://revajeti.sandracowan.com/uploads/1/3/1/8/131872295/duvajeligoxef-viken.pdf
    • http://files.themakeandcreateshop.co.uk/uploads/1/3/0/7/130775261/dalaba-renir.pdf
    • http://files.poesyfloralstudio.com/uploads/1/3/1/4/131407315/gomagof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/74902037611.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/homeschool_gradebook_template.pdf
    • https://797ca23a-1685-425a-8c25-52598b1d6d22.filesusr.com/ugd/227d0f_2bab7d45c1f641c0aac0a3d3b49276e7.pdf?index=true
    • https://ba75fa4f-0021-4878-a475-63fdfa0c3fa5.filesusr.com/ugd/26481d_6846f5ce7f4841af830d15964c409b33.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a7c.bin
061c63f4045e67dc8dec51818d72eca56265f5c04b5a30a81af70b431de76c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 5376 bytes
font_01_sfnt_off00007ca2.bin
3533bfd10444f9921f83c797b9b7ff15921f16b6558fc527f13c221243532ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA2 10900 bytes

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