Malicious PDF — malware analysis report

Static analysis result for SHA-256 28a69448fa41cf6b…

MALICIOUS

PDF

51.3 KB Created: 2020-08-03 14:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d1cdf19108c74c0906f3c2dd3e53e67 SHA-1: 2845e2f59345635c022a41aa7215662880b98d54 SHA-256: 28a69448fa41cf6b23833b0baa4060c5eaf66f308d49a38a541fbc3a0f1aaf04
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a mass external PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=tv+broadcasting+technology+pdf', is flagged as a malicious redirector. The document body is heavily obfuscated but contains references to the redirector URL. The primary purpose appears to be SEO manipulation or redirecting users to malicious content.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=tv+broadcasting+technology+pdf In PDF document text
    • http://files.jestersmvp.com/uploads/1/3/1/8/131871614/xevokoreda.pdfIn PDF document text
    • http://files.markromangbooks.com/uploads/1/3/1/4/131453990/0d3a6c582e8a9.pdfIn PDF document text
    • http://files.mylavishlylathered.com/uploads/1/3/1/8/131857334/4554032.pdfIn PDF document text
    • http://files.barnes1ststepft.com/uploads/1/3/0/7/130776239/942178a675e13e.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/1/0430/6314/8706/files/kotiziderabuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1312/7844/files/89643531821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/fisobuwimanar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/14695796724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/72929839410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/98404954972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/essential_calculus_2nd_edition_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/laxuraruled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/53293107781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/nulufetijomekonijimik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6413/9674/files/91822552431.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

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_off00008abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABF 5668 bytes
SHA-256: f346d3611e29213b26e662188207c53d345ba8b62bf5b47a7d9a1ae548d4fd19
font_01_sfnt_off00009e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E0B 10032 bytes
SHA-256: 00633edbbdfa5b6fcae5cd9b5de9840ef6ef205da9fcf0fbdf4ee12119ba2e32

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