MALICIOUS
94
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text that appears to be a lure for "June 2015 chem regents answers". The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the malicious URL used in the redirection.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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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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/123?keyword=june+2015+chem+regents+answers In PDF document text
- https://cdn-cms.f-static.net/uploads/4422643/normal_5f9b60b26ba62.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380072/normal_5f9244d543177.pdfIn PDF document text
- https://neluposu.weebly.com/uploads/1/3/4/3/134369170/vizelal.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367903/normal_5f8d43d1f2eaa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392860/normal_5f9534d187c65.pdfIn PDF document text
- https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/3672819.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426686/normal_5fa1725ff3e66.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/8d358480-4158-4742-8aaf-c41d53871ca6/63470111186.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d8847de9-f274-4d3a-b9fb-ee9ab6fac3fe/18126829096.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/93091550-3ed1-4595-936c-25c3c5fcbf4c/pulp_cthulhu_download_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3fb2918b-4cab-4179-80c6-07f824d219f3/where_is_billy_fuccillo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/06532bae-f8d8-4298-85f1-a2f5c9b8253a/nys_common_core_standards_1st_grade.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_off00004659.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4659 | 5712 bytes |
SHA-256: f80e477ace536fedb899673814e6e975f8437359dbc8629062ec971549f9d022 |
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font_01_sfnt_off000059c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x59C2 | 9656 bytes |
SHA-256: 656b08f8d6b0e1d7e3827eefc486c17ff13cecef591b7873796916d8ae8ffa6b |
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