MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=cuadernillo+para+aprender+a+leer+y+e, which is also listed as an embedded URL. This URL likely serves as the initial lure to redirect the user 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.cc/wix?keyword=cuadernillo+para+aprender+a+leer+y+e
- https://static.usrfiles.com/ugd/a4d998_6fa1279becac4862b7e246e60071f522.pdf
- https://static.usrfiles.com/ugd/599f1c_0b260d5fc4d946bfa4a06661aadd5a30.pdf
- https://static.usrfiles.com/ugd/225520_b00f4e571d6d4cbeafb5bc7ba1be4f9d.pdf
- https://static.usrfiles.com/ugd/7c3584_b9554418769543889bfc6c43fe1e328e.pdf
- https://static.usrfiles.com/ugd/b8c837_2fc892b3cb714e0c94ce61acef817458.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.pdf
- https://cdn.shopify.com/s/files/1/0433/4151/2855/files/16774512451.pdf
- https://cdn.shopify.com/s/files/1/0428/2010/8455/files/kuzivaziwumedujadipalo.pdf
- https://cdn.shopify.com/s/files/1/0428/7925/4694/files/46857275469.pdf
- https://cdn.shopify.com/s/files/1/0446/9178/3836/files/nadi_astrology_book.pdf
- https://static.usrfiles.com/ugd/b8c837_378f41b42f414a37bd4cc1379b8527a7.pdf
- https://static.usrfiles.com/ugd/dc8a8e_f03988bab4594b7696c3b815436959de.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16216600544.pdf
- https://cdn.shopify.com/s/files/1/0427/5725/9420/files/center_button_in_form_bootstrap.pdf
- https://cdn.shopify.com/s/files/1/0437/7785/1550/files/44639591134.pdf
- https://cdn.shopify.com/s/files/1/0434/1320/9246/files/zepinemoneselopuzeno.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_off00004ab0.bin98a9a6bfdea9013255d5b27058ea4031dcd92c89a5b50af7e436f575edeeb705 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4AB0 | 4780 bytes |
font_01_sfnt_off00005b01.bine667f1cd67af6feab6e62fd4a2598c128ddfb0ed1fefec2d87659098ee2b5f48 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B01 | 10208 bytes |
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