Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad28bf9d65093cbd…

MALICIOUS

PDF

39.8 KB Created: 2020-08-11 02:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d11a3a9dd6dd600f9f6fb52b245bbd51 SHA-1: df830f08e20d7e1ffb54eb2365b0293c9eb29440 SHA-256: ad28bf9d65093cbdb7409cbc4f569d7fd0d614bcab9f9e4c8b9946b3bbd6bce3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.com) designed to lead users to malicious content. The document body, though heavily obfuscated, contains a URL that aligns with the observed redirector pattern. The ML classifier strongly indicated maliciousness, and the heuristics confirm the presence of a link farm and malicious redirector usage.

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.com/pify?keyword=eduardo+galeano+futbol+pdf In PDF document text
    • http://kanuta.westmountwildrugby.com/uploads/1/3/0/8/130814124/01a84.pdfIn PDF document text
    • http://files.rendonmediation.com/uploads/1/3/1/4/131408353/tovafozetudujujabute.pdfIn PDF document text
    • http://files.lkhair.co.uk/uploads/1/3/0/7/130739864/zotafesunozupizis.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/1/0433/4324/9563/files/34296407500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/97477758976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/kopowopogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/78790328923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/31091728899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/39809128396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/37143223007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4567/files/xopisipapan.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
🗂 Part of campaign: rendonmediation.com 3 samples

Related samples 7

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_off00005df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF6 5128 bytes
SHA-256: 7ebcdef51eef5fa977657e80cc718079949a7cca2d23beb3958ffd711492e699
font_01_sfnt_off00006f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F72 10344 bytes
SHA-256: 20ea62eddb5e17ac25684ddf2de2b5893fce14024a6c1df6973bea4e5654f78b

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