MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link farm and a direct link to a malicious redirector, disguised with content related to 'Masked Singer'. The ML classifier strongly indicated maliciousness. The embedded link farm likely serves to distribute the malicious redirector URL across multiple benign-looking PDFs. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.
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://ttraff.cc/pify?keyword=masked+singer+monster+performance+episode+6
- http://files.slievenamonnurseries.com/uploads/1/3/0/7/130739398/9a0f0b0a043fc90.pdf
- http://files.decadescoffee.ca/uploads/1/3/2/6/132680796/turuvired.pdf
- http://files.dare-h2020.org/uploads/1/3/1/4/131453527/jelezofevujan.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0436/0732/6882/files/gerolegudedotunene.pdf
- https://cdn.shopify.com/s/files/1/0434/7356/7894/files/html_link_to_page.pdf
- https://cdn.shopify.com/s/files/1/0430/9755/5108/files/ubuntu_editing.pdf
- https://cdn.shopify.com/s/files/1/0431/9445/0078/files/30508883868.pdf
- https://cdn.shopify.com/s/files/1/0434/8379/1526/files/pisujaxedivawofotogov.pdf
- https://cdn.shopify.com/s/files/1/0427/5470/3526/files/72107376243.pdf
- https://cdn.shopify.com/s/files/1/0432/9173/8277/files/nujoledizimum.pdf
- https://cdn.shopify.com/s/files/1/0429/1392/3228/files/mepepuwiraxulemogag.pdf
- https://cdn.shopify.com/s/files/1/0430/7386/3842/files/cucurbitaceae_family_plants.pdf
- https://cdn.shopify.com/s/files/1/0431/2766/8890/files/names_of_allah_and_their_benefits.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007389.bin76c58c8e4bc363c310b9336ca483e64d3fcbd40060f0e0a668ab63c79e88b490 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7389 | 5664 bytes |
font_01_sfnt_off000086c6.bin323661a32fe3ea2082de28ea7e42dba66d82ed788b616ea61aac917ce6dd007a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x86C6 | 10724 bytes |
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