MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to attract search engine traffic. One of the primary URLs, 'https://cctraff.ru/strik?keyword=igcse+chemistry+notes+pdf+download', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to educational content, suggesting a lure to disguise the malicious intent. No scripts were extracted, but the structure and embedded links strongly indicate a phishing or redirection attempt.
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=igcse+chemistry+notes+pdf+download In PDF document text
- http://fewelidi.gphsmanufacturing.org/uploads/1/3/1/4/131407082/lupijotelenagesuj.pdfIn PDF document text
- http://files.walk-cards.com/uploads/1/3/2/7/132740533/290c3fde.pdfIn PDF document text
- http://files.soundnutrition.net/uploads/1/3/2/8/132815183/e90ffe510e4b13.pdfIn PDF document text
- http://disuzo.weareworking2gether.org/uploads/1/3/1/4/131412181/texiroreruvi_jiwurebusure.pdfIn PDF document text
- https://site-1036796.mozfiles.com/files/1036796/zijamagigudowebubuzemo.pdfIn PDF document text
- https://site-1036858.mozfiles.com/files/1036858/gukibela.pdfIn PDF document text
- https://site-1043160.mozfiles.com/files/1043160/pidox.pdfIn PDF document text
- https://site-1041381.mozfiles.com/files/1041381/79766078659.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/f380d638-97c4-47c5-99eb-b07d9e5bb118/10862886337.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b918c6de-7493-4cd1-b9fe-d6d80ad5ac1a/82692313264.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb9130db-5a1a-4d9d-8851-04d388f7415e/miguk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1fa7f02-e111-4ab2-9f8a-2fac9d1167d0/60934017044.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f07de82-943e-410b-9e14-01fe8ed0bdf9/tuvagakakajowu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/671968a2-fea7-4cd1-b1d6-3127caad1d81/64276587919.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/01230be4-c159-4077-8bf4-1a30e7e6c09c/93839714511.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7a3dfa1e-2ca4-4dbb-bb16-3c5ff47c7370/basafejozemejomaji.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b869abcf-6204-41f6-b5bf-6915f948d1ef/69113471345.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b8f635c9-181a-4304-af2c-627ab72451be/vozegaxonosozowedes.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_off00004fe3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4FE3 | 5700 bytes |
SHA-256: b2959723254a188474d7f3bb94d10e848ff00d9a0b3f2d52b35d1b0d23a8c64a |
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font_01_sfnt_off0000633b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x633B | 9876 bytes |
SHA-256: 5c3eafa6bc4fbcfa6d832b685c4f864af94c5afc008a5ef564e50bee8b781f63 |
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