Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c5daed7a0da987…

MALICIOUS

PDF

43.6 KB Created: 2020-09-17 13:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af0263fbba5a4d8399d55be85f30277e SHA-1: d0cbf6227adf47c40854f67103bf356f98589b0f SHA-256: 15c5daed7a0da987bcc5b414eed0ce49685a9b19b4bb6b715fc7987ab496b380
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure and SEO link farms. The primary redirector URL is https://ttraff.link/wix?keyword=warrior+cats+codebreakers, which is likely used to obscure the final malicious destination. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of malicious redirector links and a link farm.

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.link/wix?keyword=warrior+cats+codebreakers In PDF document text
    • http://files.level2development.com/uploads/1/3/1/6/131606666/kuzuja-bezapadadosepe-burobo-rezegesagak.pdfIn PDF document text
    • http://vumagal.hillcountrycommunicators.org/uploads/1/3/1/6/131606027/neliwapazasukadixodo.pdfIn PDF document text
    • http://files.buyers-club-solar.com/uploads/1/3/1/3/131398131/9206617.pdfIn PDF document text
    • http://files.tlcbangor.com/uploads/1/3/1/4/131409709/655201d22dc70.pdfIn PDF document text
    • http://fijunik.charlesrivercenterroadrace.com/uploads/1/3/1/4/131453293/012f4c4ac.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/1/0433/9240/1573/files/kamifuromunote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/ruwufurodibobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufotiniponekurek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/19959066170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/beaconmedaes_zone_valve_box.pdfIn PDF document text
    • https://f48cc340-b9b3-4603-94b6-061f5fd22c07.filesusr.com/ugd/76aeb6_ec82e2de9f784f96bb5e9fefa05fb95a.pdf?index=trueIn PDF document text
    • https://e0a5ee86-39b8-4cfc-8d9d-3fc4a5cf7317.filesusr.com/ugd/d902bb_f240da731f854f22b07c69ccdf745a7d.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 6

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_off00006d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 5116 bytes
SHA-256: 3c802d089c7259ed2f8f59da3cedc64c240e001091c91cc17a8d5c368a8f026e
font_01_sfnt_off00007ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDE 10112 bytes
SHA-256: d5c244e2ad137cd5a6642833afc8748048aa337b67919347a05e92aeded0c944

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