MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=idsa+discitis+guidelines', points to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated and contains the malicious URL, suggesting a lure to a malicious site.
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.ru/pify?keyword=idsa+discitis+guidelines
- http://bavev.sticksandstones1.com/uploads/1/3/0/7/130775934/sivavipulabav.pdf
- http://files.narrenofnewulm.com/uploads/1/3/2/3/132302819/1d4814a419.pdf
- https://cdn.shopify.com/s/files/1/0433/2378/5370/files/jidowaduparomazisa.pdf
- https://cdn.shopify.com/s/files/1/0431/0866/3462/files/medical_fitness_certificate.pdf
- https://cdn.shopify.com/s/files/1/0432/9432/6942/files/vowuvolevizidanix.pdf
- https://cdn.shopify.com/s/files/1/0433/9862/7495/files/34904774683.pdf
- https://cdn.shopify.com/s/files/1/0435/1783/7480/files/zetukunemeba.pdf
- https://cdn.shopify.com/s/files/1/0432/9085/3541/files/tamil_to_english_words.pdf
- https://cdn.shopify.com/s/files/1/0454/7464/4120/files/physics_textbook_for_secondary_school.pdf
- https://cdn.shopify.com/s/files/1/0429/2847/2220/files/zuvafexobu.pdf
- https://cdn.shopify.com/s/files/1/0436/0355/8564/files/16211269756.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.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_off000175a6.bin4de03068621de994ef45ace1b5fa9480a05d59e4466e696bc468a14332cd5844 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x175A6 | 4948 bytes |
font_01_sfnt_off00018688.bind87037bc5624b79caaec17b837283b6dfeebc4b341b0e55e3e9bd9044453cf25 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18688 | 10404 bytes |
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