MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains a large number of embedded links, many pointing to disposable hosting, suggesting a link farm designed to manipulate search engine results or distribute traffic. One of the embedded URLs, https://cctraff.ru/strik?keyword=daily+routine+speaking+activities+esl, is identified as a malicious redirector, indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://cctraff.ru/strik?keyword=daily+routine+speaking+activities+esl In PDF document text
- https://site-1036728.mozfiles.com/files/1036728/webewewerisinasikaluxut.pdfIn PDF document text
- https://site-1036982.mozfiles.com/files/1036982/dogikenotijitel.pdfIn PDF document text
- https://site-1036824.mozfiles.com/files/1036824/7982806175.pdfIn PDF document text
- https://site-1037115.mozfiles.com/files/1037115/xigazoguxabu.pdfIn PDF document text
- https://site-1036880.mozfiles.com/files/1036880/15971175154.pdfIn PDF document text
- http://files.greetingscomrade.com/uploads/1/3/1/6/131636833/sebugepuwarazikugaxa.pdfIn PDF document text
- http://venoku.mangerenazarenechurch.com/uploads/1/3/1/6/131637814/tafitiv.pdfIn PDF document text
- http://files.buyers-club-solar.com/uploads/1/3/0/8/130874691/sudivodix_japujomeva.pdfIn PDF document text
- http://files.storyatradingco.com/uploads/1/3/1/8/131856516/bexuzijikemol.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/be864655-9c56-44af-b8c9-d7edcbb7c13d/mabubotemixinetal.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0b712b30-d497-49c5-949f-6827b5fb1331/pupezikisevalexipob.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b7201a16-6726-471e-8c46-d49ad2af6a94/90532516841.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4865af9a-f963-467f-9755-8521c51f4aba/93619230021.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/90eb32dd-36d9-491e-b2ef-6047fc594ead/49559490498.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb773a36-7195-45e9-bda4-1eab45a808a9/61610041581.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b33b0845-4130-4585-a7bd-7b9d3407560a/8449901817.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/909eb329-81d8-43aa-8d34-1f8872d78cf9/43831820696.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d652d527-5348-48fd-8075-b6142b91cc35/jogogokixeludofela.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/56fa2929-d30e-4b8f-90d3-06a79266b1c5/suwokanuv.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_off00006f03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F03 | 5328 bytes |
SHA-256: e177400ca85b59c5e8e971e2eb6d9330d7dcd8b7a3e1910bc4a0bd9ce599dfed |
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font_01_sfnt_off00008153.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8153 | 10096 bytes |
SHA-256: f9bc05f306123a61994a494763e4f7ce1866008e41429c630d4ded6ab77f4644 |
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