MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=livros+sobre+liberalismo+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other PDF links indicates a link farm strategy to obscure the malicious destination. The ML classifier strongly supports the malicious verdict.
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.com/pify?keyword=livros+sobre+liberalismo+pdf
- http://files.clearpointtechdesign.com/uploads/1/3/1/6/131636655/diwuzoremibav.pdf
- http://files.greenmarkdairy.com/uploads/1/3/1/8/131856703/mekuliworuge.pdf
- http://rexum.frufruandfeathers.com/uploads/1/3/0/7/130738848/rugoxe.pdf
- http://files.reillyjones.com/uploads/1/3/1/4/131406288/9160455.pdf
- https://cdn.shopify.com/s/files/1/0431/6997/2383/files/97414032724.pdf
- https://cdn.shopify.com/s/files/1/0431/4293/8784/files/29624375655.pdf
- https://cdn.shopify.com/s/files/1/0440/8334/7606/files/beginners_english_questions.pdf
- https://cdn.shopify.com/s/files/1/0429/9954/6010/files/posenofijekinifuzemoma.pdf
- https://cdn.shopify.com/s/files/1/0431/1502/0448/files/sepirew.pdf
- https://cdn.shopify.com/s/files/1/0438/0593/3730/files/nularexebefenifek.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdf
- https://cdn.shopify.com/s/files/1/0431/0204/4316/files/17895975827.pdf
- https://cdn.shopify.com/s/files/1/0430/4571/6119/files/ruxisexarazagobevolanimi.pdf
- https://cdn.shopify.com/s/files/1/0427/8131/1132/files/gutam.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c1c.bin265a56bec7f1bdebd59bef6d2f7c210094ed22fbaff0b65a71d57f69715ceec1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C1C | 5328 bytes |
font_01_sfnt_off00007e29.bin7b9f282351be00685c8b58972c69c47bf96c24f921073c906b11223261a3e1b6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E29 | 12092 bytes |
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