MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a significant number of embedded links pointing to external PDF files hosted on disposable domains, indicating a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://cctraff.ru/strik?keyword=spelling+worksheets+elementary+students', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The presence of numerous links suggests an attempt to distribute malicious content or manipulate search results.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
-
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.
-
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.
-
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.
-
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.
-
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=spelling+worksheets+elementary+students In PDF document text
- https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/94106441c.pdfIn PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
- https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
- https://site-1040125.mozfiles.com/files/1040125/suferasadarixiseg.pdfIn PDF document text
- https://site-1041684.mozfiles.com/files/1041684/samsung_galaxy_s2_software_update_apk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366369/normal_5f87237df3282.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367286/normal_5f87a5f20b874.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366630/normal_5f875e738ca29.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366399/normal_5f8783ed435db.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366302/normal_5f870ddde02c9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365525/normal_5f878e53e4ae9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365626/normal_5f876c75ed508.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366969/normal_5f876cef57dfe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366661/normal_5f879eb5910df.pdfIn PDF document text
- https://site-1037024.mozfiles.com/files/1037024/firubuviborejukov.pdfIn PDF document text
- https://site-1037177.mozfiles.com/files/1037177/pavafilaj.pdfIn PDF document text
- https://site-1036973.mozfiles.com/files/1036973/12223479661.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/a825c231-e992-4ead-b112-e14b69742572/gazotalo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/39080b54-30cf-470c-9452-6f8e1292b434/24962185113.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d755aad-32b0-4af3-ae97-38066a6db4f9/86805592635.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ff1bcde9-500a-4741-a0b1-8135abd58fcd/22378739643.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_off00007336.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7336 | 5736 bytes |
SHA-256: f3a201e46de561d0be39e059f4b2bd67ebff8444b5711f168a4ea4a478436ea3 |
|||
font_01_sfnt_off0000869d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x869D | 10280 bytes |
SHA-256: acde9a5680a6012259dd7e15d8034ba520a3b763a98b84269cd0248ba7c5cf3f |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.