MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to disposable hosting, designed to create a link farm. One of these links, https://cctraff.ru/strik?keyword=katekyo+hitman+reborn+computer+icons, is identified as a known malicious redirector, indicating a malicious intent to lead users to harmful content. 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=katekyo+hitman+reborn+computer+icons In PDF document text
- https://site-1036988.mozfiles.com/files/1036988/bodirulidan.pdfIn PDF document text
- https://site-1039360.mozfiles.com/files/1039360/96696288236.pdfIn PDF document text
- https://site-1036941.mozfiles.com/files/1036941/zowawe.pdfIn PDF document text
- https://site-1037849.mozfiles.com/files/1037849/24058051508.pdfIn PDF document text
- https://site-1036874.mozfiles.com/files/1036874/sefosusomife.pdfIn PDF document text
- http://files.buybooknookbooks.com/uploads/1/3/2/6/132695566/3129439.pdfIn PDF document text
- http://files.personalspaceproject.com/uploads/1/3/2/7/132740343/piwepapefa-kavijabojexopi-fuwuwumewa.pdfIn PDF document text
- http://files.singersandactorsworkshop.com/uploads/1/3/2/7/132740218/mubazaxumadajag.pdfIn PDF document text
- http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.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/900a0cab-3dd3-4f57-9e8e-19c73d08557a/pokozitafopi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/df3368eb-5273-484b-99a6-600b6ba45a2f/fasesuxatixebuk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7feaf408-9232-45f2-91cd-65baa29afcbc/sovonetigulajokir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/9947/4070/files/bigewejuwusigojoxawixiv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/6317/6085/files/53797821268.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8209/4494/files/pokemon_x_and_y_romance.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5497/9477/files/9444819224.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8706/9348/files/73552405580.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000051c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x51C8 | 5416 bytes |
SHA-256: 178d6a2a474245bd9186ac353c1f468ea8fd0fa61e2cc4a6957e26f1cb0e799a |
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font_01_sfnt_off0000640e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x640E | 14860 bytes |
SHA-256: ca5ff4c60c09a656f70e57e6c92247d6faeedcb648caf01d1c22b098e9240b29 |
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font_02_sfnt_off00009230.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9230 | 16248 bytes |
SHA-256: 9e020c854edd9d16e76d4d276d806d6ad9537766fc0f49e31c6b0dee74960295 |
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