MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that masquerade as a technical book resource, but redirect to malicious infrastructure. The ML classifier strongly indicates maliciousness, and the PDF is flagged as a redirector link. The document body itself contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=cracking+the+coding+interview+pdf+8th In PDF document text
- http://xufeb.numc.net/uploads/1/3/1/6/131637312/f0e9c610c.pdfIn PDF document text
- http://zuradokub.danceytude.com/uploads/1/3/2/3/132303195/5294134.pdfIn PDF document text
- http://xurivim.annemariaclarke.net/uploads/1/3/1/0/131070993/bejavonij.pdfIn PDF document text
- http://nubafot.garprimitives.com/uploads/1/3/0/9/130969746/7f53c578aaed7c2.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/10c9a45d-f899-4392-9d96-57f559d55739/31245160254.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/47b0d941-3b70-49eb-9aa6-72a9b191ecdc/zalowa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ad330986-2dc6-4702-b968-e541c6db7182/wivedifenipix.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e92a79c8-61fc-4d67-a6a3-43fcfc9d9064/23309641623.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dc7bb11d-a49e-4c1c-89a0-d1b6828b7b54/pukut.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_off00005eb4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EB4 | 5520 bytes |
SHA-256: c8e201d8bc37adbe1210a5419d0801032ee11b98710dd87305eebc36db54d359 |
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font_01_sfnt_off0000718d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x718D | 10280 bytes |
SHA-256: 4a07028d4a4459d002f7154f8c16483328c926983e4d99d6cbf156b587eed0f8 |
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