Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb4ce8d8e4c442a4…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 08:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48a65d9e6066c8e24f082de1231d8ac5 SHA-1: 682bf6bd804b419ad85739e25864efee798ee81a SHA-256: cb4ce8d8e4c442a4e11c5d55420dc4583b8e50c2fcb7afb3c1645fea18f2800a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=despacito+ukulele+pdf'. This indicates the document is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of an SEO link farm, embedding numerous links to other PDFs, likely to manipulate search engine results or distribute further malicious content. The document body contains garbled text but also includes the primary malicious URL, reinforcing the redirection attack pattern.

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.cc/pify?keyword=despacito+ukulele+pdf In PDF document text
    • http://files.pinkturtledesigns.co.uk/uploads/1/3/0/9/130969446/fogokopumaza-taviveriwakar-febox.pdfIn PDF document text
    • http://files.homeopathhealer.com/uploads/1/3/0/7/130776850/7878817.pdfIn PDF document text
    • http://files.wooddragonadvising.org/uploads/1/3/2/6/132681062/1373169.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/1/0431/5247/4267/files/86293250180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7807/5036/files/43821950023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/jedebarinegezezewemupamez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9535/9642/files/7891566015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/43770861095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/69006238129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/12284070433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/vawesoxoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/emblems_for_battlefield_4_com.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_off000063a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A7 5116 bytes
SHA-256: 4a7ed1b1fa2711d5a145fa3e40bf958e16dec82645d9f60b12b348fd9295d5dc
font_01_sfnt_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 13784 bytes
SHA-256: 6fdcb2cb39a7062c7eb0cb9311673a93f41d6b02d07f8cf9085f3cf6572922c0

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