MALICIOUS
224
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous embedded links, many pointing to disposable domains and one specifically to a known malicious redirector infrastructure at https://cctraff.ru/strik?keyword=w3schools+js+tutorial. The heuristic firings indicate a link farm designed for SEO manipulation or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious, suggesting a high likelihood of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=w3schools+js+tutorial In PDF document text
- http://files.virtualcareforsuncoast.com/uploads/1/3/1/4/131483361/nozijer.pdfIn PDF document text
- http://files.petdishweekly.com/uploads/1/3/1/3/131380591/77cd3edbffd23.pdfIn PDF document text
- http://files.rwaconsultants.net/uploads/1/3/1/6/131607363/9866357.pdfIn PDF document text
- http://files.perinatalpsynimhans.org/uploads/1/3/0/7/130776267/dofojonujeluta.pdfIn PDF document text
- http://sidotu.allstudentslearn.com/uploads/1/3/0/8/130874482/rapev.pdfIn PDF document text
- http://wenizes.bloomingtonbobcatshomeschoolathletics.com/uploads/1/3/1/4/131482997/wugimenikoxopes.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/1/0433/9499/0247/files/razagumifumulagamajemed.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0485/7934/6592/files/woodland_cemetery_dayton_ohio_find_a_grave.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/3733/9031/files/pirates_of_silicon_valley_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9085/3540/files/ways_to_reduce_armor_check_penalty.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/3337/4115/files/cincinnati_music_festival_2019_2_day_pass.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f1686c3-8ea8-4521-8ae0-2458ba50355a/kinotevebon.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bb19bd96-58b7-40f1-8681-c0db8fa1f645/55106895355.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0dc4e6a0-bafc-4da7-a22d-07bdff20002d/58388553012.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d5ca0d9-5968-4c3d-bc3d-827906584cab/tirumopomed.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/890dbfb3-21f6-46cb-a096-8c4e76a86d30/tejofuwo.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_off00005d4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D4A | 5140 bytes |
SHA-256: 467cdeaad5715f8e50630df20e125110757a0c36b04423a5c607ea5ec4bcb18e |
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font_01_sfnt_off00006ed1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6ED1 | 14404 bytes |
SHA-256: 4c9693c04ffcfefd4c1c803cb7f7a464874aa3e48ddf3abbc4947e0fdfd4a254 |
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font_02_sfnt_off00009bf2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BF2 | 16088 bytes |
SHA-256: 2727b978b38a50f39ad898ebf475f8e8b5e599e3ec01ea6686db683a475b2ff9 |
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