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) First seen: 2026-05-09
MD5: c83f58f644cf27bc9d3bf694fae01694 SHA-1: 7cea63d72a744cd528f9409d3dff53ea6e137ccc SHA-256: 091cbf75946fb34a19e617f62b6274d965dec76d94af441ffa4089f38373e97e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link to a redirector URL, which is flagged as malicious. The document also functions as a link farm, directing users to multiple disposable domains, indicating an attempt to distribute malicious content or conduct phishing. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=kid+vs+ice+cream+hacked+arcadeprehacks In PDF document text
    • http://tumumud.autofashions-pittsboro-nc.com/uploads/1/3/0/8/130814328/5217060.pdfIn PDF document text
    • http://files.adolescentidentities.com/uploads/1/3/1/3/131398598/3525293.pdfIn PDF document text
    • http://revajeti.sandracowan.com/uploads/1/3/1/8/131872295/duvajeligoxef-viken.pdfIn PDF document text
    • http://files.themakeandcreateshop.co.uk/uploads/1/3/0/7/130775261/dalaba-renir.pdfIn PDF document text
    • http://files.poesyfloralstudio.com/uploads/1/3/1/4/131407315/gomagof.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/1/0432/8669/1998/files/74902037611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/homeschool_gradebook_template.pdfIn PDF document text
    • https://797ca23a-1685-425a-8c25-52598b1d6d22.filesusr.com/ugd/227d0f_2bab7d45c1f641c0aac0a3d3b49276e7.pdf?index=trueIn PDF document text
    • https://ba75fa4f-0021-4878-a475-63fdfa0c3fa5.filesusr.com/ugd/26481d_6846f5ce7f4841af830d15964c409b33.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 5376 bytes
SHA-256: 061c63f4045e67dc8dec51818d72eca56265f5c04b5a30a81af70b431de76c1e
font_01_sfnt_off00007ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA2 10900 bytes
SHA-256: 3533bfd10444f9921f83c797b9b7ff15921f16b6558fc527f13c221243532ddb

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