MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains numerous links to external resources, masquerading as a 'PDF to word converter'. The primary link, 'https://ttraff.ru/wb?keyword=pdf%20to%20word%20converter%20online%20small%20pdf', is identified as a malicious redirector. The document also exhibits characteristics of a browser extension installation lure, suggesting a social-engineering tactic to trick users into downloading further malicious content or providing credentials. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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/wb?keyword=pdf%20to%20word%20converter%20online%20small%20pdf In PDF document text
- http://notula.preferredagent.org/uploads/1/3/1/8/131871590/puvujanixab.pdfIn PDF document text
- http://wonesasit.jorricmatthews.com/uploads/1/3/2/3/132302780/c8e55b1c.pdfIn PDF document text
- http://files.jerostique.com/uploads/1/3/2/7/132740553/135078.pdfIn PDF document text
- http://wivarunel.clarkhsu.com/uploads/1/3/1/4/131482975/xosuv_sefemixiv_xizejagewasaked_rorizorexa.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/1/0432/4347/1010/files/12018837362.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9561/1805/files/math_worksheets_1st_grade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3551/5290/files/33605642092.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4759/8742/files/best_sites_to_watch_movies_and.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7877/0078/files/ripijona.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9114/8444/files/convert_base64_to_angular_4.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0335/5034/files/52400786717.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8963/9077/files/84628505899.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7699/3695/files/inches_to_meter_conversion_chart.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000061ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61AD | 5452 bytes |
SHA-256: 70528fc5cd20b0f61b133a6134d3c567135d58be3d374bd06dc7e037e388dc6a |
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font_01_sfnt_off00007437.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7437 | 10008 bytes |
SHA-256: 70f2e3de420927270afc46ca9772e9548026353372222b918014a7fedd0a1b46 |
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