MALICIOUS
224
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a deceptive title related to university fees, designed to entice users to click on embedded links. It features multiple heuristics indicating malicious redirector links and a link farm hosted on disposable infrastructure. The primary malicious URL identified is https://cctraff.ru/strik?keyword=makerere+university+fees+structure+pdf, which likely leads to a further stage of the attack.
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=makerere+university+fees+structure+pdf In PDF document text
- https://site-1039898.mozfiles.com/files/1039898/siput.pdfIn PDF document text
- https://site-1036971.mozfiles.com/files/1036971/6765081494.pdfIn PDF document text
- https://site-1038789.mozfiles.com/files/1038789/pijawudixutabavemenov.pdfIn PDF document text
- https://site-1036724.mozfiles.com/files/1036724/zabutonokeramu.pdfIn PDF document text
- http://files.dataforamericaspastthroughlocalhistory.com/uploads/1/3/2/6/132695576/9482814.pdfIn PDF document text
- http://files.crandicracing.com/uploads/1/3/1/1/131164377/kijol.pdfIn PDF document text
- http://gatel.sabrinamoella.com/uploads/1/3/1/1/131163747/xazixolol.pdfIn PDF document text
- http://zulazu.priscillaventurablog.com/uploads/1/3/1/3/131380213/sajazojola.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/c1c5143f-b950-4283-8436-0286747ac07f/tarakopefuzuniwukurite.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6e1edca1-4323-4140-b769-28fc8af201e6/dewamoniwedad.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/44c33577-fa32-43a0-9a5a-5b025695f768/fevosolawugixigituj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/48394eb3-1a4e-4ae0-b698-7831655da72e/13585138404.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd247273-641e-410f-8a97-7df3ed66db18/92953156862.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c291f5cc-1993-469c-a8fe-0e20fa8e9818/99781237220.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/06fa7196-2c26-49e9-9823-9fa4f9797108/nivifexugumegolananukon.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8d9e1376-9a1e-424d-a1d5-f516bfcd5c8e/kiwovibuwabolukoruwuturig.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/15e96aec-aa40-4b42-a8c5-68f4f7b32cb3/ribusatolabaxinenig.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_off0000916f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x916F | 5348 bytes |
SHA-256: b9d7c6fc4bc278542ee36c5a2df81452f82e652e05ec2df9044f0b2aac2fbef9 |
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font_01_sfnt_off0000a3d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA3D2 | 16768 bytes |
SHA-256: 50ae04ec7e2f91998fa0a13c663ca2b089d9deaa924e569f070684574d7eb89b |
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